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  • Street tire measurements:

    Your street tires are the most important part of your motorcycle. They are what keeps your motorcycle connected to the road giving you the confidence and assurance to drag that knee and take that next turn.

    Motorcycle Street Tires are normally measured in millimeters by Width & Aspect Ratio x Rim Diameter (Inches). Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      190
    • Aspect Ratio:
      50
    • Rim Diameter:
      17"
    • 190/50ZR-17(73W)

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    A tire that has its cord plies arranged perpendicular (at a 90 degree angle) to the direction of travel.
    Belted ("B")
    A belted bias tire starts life as a normal bias-ply tire, then stabilizer belts are placed on top of the existing plies at different angles. This improves performance over non-belted, bias-ply tires (also called cross-ply).
    Bias-Ply
    If it has neither of these letters, it will be a bias-ply tire.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MM90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 1.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.00/6.00
    140/90 MU90 6.00/6.25
    150/90 MV65 6.00/6.25
    150/90 MV65 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top
  • Cruiser tire measurements:

    For those long highway rides or windy roads your cruiser tires are what keep you connected to the road. Giving you that smooth ride that provides you with confidence and assurance that no road is too far or out of reach.

    Motorcycle Cruiser Tires are normally measured in millimeters by Width & Aspect Ratio x Rim Diameter (Inches). Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      110
    • Aspect Ratio:
      90
    • Rim Diameter:
      19"
    • 110/90-19(62H)

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    A tire that has its cord plies arranged perpendicular (at a 90 degree angle) to the direction of travel.
    Belted ("B")
    A belted bias tire starts life as a normal bias-ply tire, then stabilizer belts are placed on top of the existing plies at different angles. This improves performance over non-belted, bias-ply tires (also called cross-ply).
    Bias-Ply
    If it has neither of these letters, it will be a bias-ply tire.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MM90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 1.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.00/6.00
    140/90 MU90 6.00/6.25
    150/90 MV65 6.00/6.25
    150/90 MV65 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top
  • Dirt tire measurements:

    Whether on the track, in the woods or in the desert traction is a concern. Choosing the right size and compound for the type of terrain you’ll be in will give you the traction your dirtbike needs.

    Motorcycle Dirt Tires are normally measured in millimeters by Width & Aspect Ratio x Rim Diameter (Inches). Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      190
    • Aspect Ratio:
      50
    • Rim Diameter:
      17"
    • 190/50X17

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    A tire that has its cord plies arranged perpendicular (at a 90 degree angle) to the direction of travel.
    Belted ("B")
    A belted bias tire starts life as a normal bias-ply tire, then stabilizer belts are placed on top of the existing plies at different angles. This improves performance over non-belted, bias-ply tires (also called cross-ply).
    Bias-Ply
    If it has neither of these letters, it will be a bias-ply tire.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    60/100 90/80 2.50/2.75
    70/100 90/90 2.75/3.00
    80/100 100/80 3.25/3.50
    Rear tires
    MetricAlphaInch
    80/100 80/90 2.50/3.60
    90/100 110/90 3.60/4.10
    100/100 120/80 4.00/4.10
    110/100 130/80 4.00/4.50
    120/100 140/80 5.00/5.10

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top
  • Adventure tire measurements:

    The best of both worlds is the best way to describe adventure and dual sport riding. Having the ability be on the road and with one turn be on the dirt is an amazing task. So having the right tire is critical to this style of riding. Choosing the right size and compound could make or break that next adventure.

    Motorcycle Adventure Tires are normally measured in millimeters by Width & Aspect Ratio x Rim Diameter (Inches). Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      190
    • Aspect Ratio:
      50
    • Rim Diameter:
      17"
    • 190/50X17

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    A tire that has its cord plies arranged perpendicular (at a 90 degree angle) to the direction of travel.
    Belted ("B")
    A belted bias tire starts life as a normal bias-ply tire, then stabilizer belts are placed on top of the existing plies at different angles. This improves performance over non-belted, bias-ply tires (also called cross-ply).
    Bias-Ply
    If it has neither of these letters, it will be a bias-ply tire.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MN90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 4.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.50/6.00
    140/90 MU90 5.50/6.00
    150/80 MV85 6.00/6.25
    150/90 MV85 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top
  • ATV tire measurements:

    Whether on the track, in the woods or in the desert traction is a concern. Choosing the right size and compound for the type of terrain you’ll be in will give you the traction your ATV needs.

    ATV Tires are normally measured in Inches by Height, Width & Rim Diameter. Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      190
    • Aspect Ratio:
      50
    • Rim Diameter:
      17"
    • 190/50X17

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    Radial constructed tires utilize both ply and breaker (or belt) cords. The Ply cords extend from bead to bead at approximately 90 degree angle to the centerline of the tire. The breaker (or belt) cords are placed on top of the ply cords across the width of the tire. Advantages: Adding breaker (or belt) cords results in a stiffer carcass which helps provide a longer tread and tire life, better steering control and handling, overall smoother ride and ride comfort, and higher tread puncture resistance.
    Bias ("B")
    Bias tires typically have the ply cords that extend diagonally from bead to bead at a range of 30 to 60 degree angles from the centerline. Each successive ply is laid at an opposing angle, forming a kriss-cross pattern. Advantages: The design allows the entire tire body to flex easily, giving a comfortable ride on rough surfaces.
    Ply-Rating
    ATV tires come in several different ply ratings. 2-Ply Rating, 4-Ply Rating, 6-Ply Rating, 8-Ply Rating etc. The higher the ply rating the stronger the tire is. But also remember the tire will be heavier.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MM90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 1.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.00/6.00
    140/90 MU90 6.00/6.25
    150/90 MV65 6.00/6.25
    150/90 MV65 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
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  • UTV tire measurements:

    Whether on the track, in the woods or in the desert traction is a concern. Choosing the right size and compound for the type of terrain you’ll be in will give you the traction your UTV needs.

    UTV Tires are normally measured in Inches by Height, Width & Rim Diameter. Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      190
    • Aspect Ratio:
      50
    • Rim Diameter:
      17"
    • 190/50X17

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    Radial constructed tires utilize both ply and breaker (or belt) cords. The Ply cords extend from bead to bead at approximately 90 degree angle to the centerline of the tire. The breaker (or belt) cords are placed on top of the ply cords across the width of the tire. Advantages: Adding breaker (or belt) cords results in a stiffer carcass which helps provide a longer tread and tire life, better steering control and handling, overall smoother ride and ride comfort, and higher tread puncture resistance.
    Bias ("B")
    Bias tires typically have the ply cords that extend diagonally from bead to bead at a range of 30 to 60 degree angles from the centerline. Each successive ply is laid at an opposing angle, forming a kriss-cross pattern. Advantages: The design allows the entire tire body to flex easily, giving a comfortable ride on rough surfaces.
    Ply-Rating
    ATV tires come in several different ply ratings. 2-Ply Rating, 4-Ply Rating, 6-Ply Rating, 8-Ply Rating etc. The higher the ply rating the stronger the tire is. But also remember the tire will be heavier.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MM90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 1.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.00/6.00
    140/90 MU90 6.00/6.25
    150/90 MV65 6.00/6.25
    150/90 MV65 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top
  • Scooter tire measurements:

    For most it’s our day to day commuter going to work or school. So the dependability of your scooter tire are very important. They are what keeps your scooter connected to the road and providing you with that smooth safe ride.

    Motorcycle Scooter Tires are normally measured in millimeters by Width & Aspect Ratio x Rim Diameter (Inches). Please see the example below for assist or give one of our TMS Parts Specialist a call at 877-698-4123 or try our Live Chat for speedy service.

    Tubeless
    Tread:
    4 Plies Nylon
    Sidewall:
    2 Plies Nylon
    • Width:
      130
    • Aspect Ratio:
      80
    • Rim Diameter:
      16"
    • 130/80P-16

    Terms definitions:

    Width
    The first number or second letter in a tire size represents the nominal width. Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall. If there is any question whether or not a larger than OEM tire will fit your bike, you're encouraged to our TMS Parts Specialist. The different size numbering systems specify widths in different measurements.
    Aspect Ratio
    Aspect Ratios indicate a tires cross-sectional profile. The smaller the number, the lower the profile. It expresses the height to width ratio as a percent. A 90 aspect ratio means the tire's cross sectional height is 90% of it's width. The aspect ratio appears immediately after the width in the Metric, Alpha and Low Profile Inch numbering systems.
    Rim Diameter
    Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.
    Speed Rating
    Speed Ratings are internationally recognized maximum speeds at which the tire may be used with maximum load when the maximum listed inflation pressure is used. Maximum loads and inflation pressures are found on the sidewalls of the tires. Speed ratings are coded by a letter, which appears directly after the width, aspect ratio, or as part of a three digit Load/Speed Index, found on the tire directly after the complete size designation.
    SS Km/h Mph
    F 80 50
    J 100 62
    L 120 75
    M 130 81
    N 140 87
    P 150 94
    R 170 106
    S 180 112
    H 210 130
    V 240 149
    Z 240+ 149+
    W 270 168
    (W) 270+ 168+
    Tire Construction
    The Tire Construction, when included in the size numbering, is listed after the speed rating. The two options for tire construction are Belted (B) or Radial (R). A belted tire has fiberglass, Kevlar, or aramid fiber belts for added strength and load capacity, however not all belted tires will have the B designation. If a tire does not have the Radial (R) designation, it is a bias-ply tire.
    Radial
    A tire that has its cord plies arranged perpendicular (at a 90 degree angle) to the direction of travel.
    Belted ("B")
    A belted bias tire starts life as a normal bias-ply tire, then stabilizer belts are placed on top of the existing plies at different angles. This improves performance over non-belted, bias-ply tires (also called cross-ply).
    Bias-Ply
    If it has neither of these letters, it will be a bias-ply tire.
    Load Rating
    The load rating is found after the tire size. This number represents the tire's load carrying maximum capacity at maximum air pressure.
    LI KGS LBS
    21 82.5 182
    22 85 187
    23 87.5 193
    24 90 198
    25 92.5 204
    26 95 209
    27 97.5 215
    28 100 220
    29 103 227
    30 106 234
    31 109 240
    32 112 247
    33 115 254
    34 118 260
    35 121 267
    36 125 276
    37 128 282
    38 132 291
    39 136 300
    40 140 309
    41 145 320
    42 150 331
    43 155 342
    44 160 353
    45 165 364
    46 170 375
    47 175 386
    48 180 397
    49 185 408
    50 190 419
    LI KGS LBS
    51 195 430
    52 200 441
    53 206 454
    54 212 467
    55 218 481
    56 224 494
    57 230 507
    58 236 520
    59 243 536
    60 250 551
    61 257 567
    62 265 584
    63 272 600
    64 280 617
    65 290 639
    66 300 661
    67 307 677
    68 315 694
    69 325 716
    70 335 736
    71 345 761
    72 355 783
    73 365 805
    74 375 827
    75 387 853
    76 400 882
    77 412 908
    78 425 937
    79 437 963

    Motorcycle tire designations charts

     
    Front tires
    MetricAlphaInch
    80/90 MH 2.50/2.75
    90/90 MJ90 2.75/3.00
    100/90 MM90 3.25/3.50
    110/90 MM90 3.75/4.00
    120/80 N/A 4.25/4.50
    120/90 MR90 4.25/4.50
    130/90 MT90 5.00/5.10
    Rear tires
    MetricAlphaInch
    110/90 MP85 4.50/4.75
    120/90 MR90 1.50/4.75
    130/80 N/A 5.00/5.10
    130/90 MT90 5.00/5.10
    140/80 N/A 5.00/6.00
    140/90 MU90 6.00/6.25
    150/90 MV65 6.00/6.25
    150/90 MV65 6.00/6.25

    Wheel sizing and offset

    To determine the diameter of a wheel:
    Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
    To determine the offset and width of a wheel:
    Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
    Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.
     
    Safety:
    Inspect and check tire pressure often. This is the most important time-maintenance function you can perform. Refer to your machine's documentation for proper maintenance. Always give tires a gentle "run-in" period of 100 miles to get the feel of new tires - this means they should not be subjected to maximum power, abrupt lean-over, hard cornering, etc. Always match the front and rear tires for optimal handling, safety, and performance. Mixing radials, or mixing radials with bias or belted-bias tires may adversely affect handling and stability.
    Warning:
    The charts and information on this page do not imply interchangeability. Consult your machine's manual to determine correct replacements, clearances, compatibility and stability, load-bearing capacity, speed rating, radial vs. non-radial, pattern and tread compound requirements, inflation recommendations and front-to-rear tire matching. Wrong selection can result in tire failure or loss of control with serious injury or death.
    Back to top