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Motorcycle Tire Information

Motorcycle Tire Speed Ratings, Load Ratings and Motorcycle Tire Size Designations

More: Motorcycle Tire Reviews  |  Motorcycle Tire Sizes  |  Dual-Sport Tires

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Front Tire Size Conversions Rear Tire Size Conversions
Metric Alpha Inch Metric Alpha Inch
80/90 MH90 2.50/2.75 110/90 MP85 4.00/4.75
90/90 MJ90 2.75/3.00 120/90 MR90 4.50/4.75
100/90 MM90 3.25/3.50 130/80 5.00/5.10
120/80 4.25/4.50 140/80 5.50/6.00
120/90 MR90 4.25/4.50 140/90 MU90 5.50/6.00
130/90 MT90 5.00/5.10 150/80 MV85 6.00/6.25
150/90 MV85 6.00/6.25
Tire Speed Rating Chart
Motorcycle Tire Speed Ratings Max. Design Speed (MPH) Test Speed* (MPH)
J Type 62 100
N Type 87 140
P Type 94 150
S Type 112 180
H Type 130 210
V Type 149 240
Z Type 149+ 240+
Note: Tires with 2.00, 2.25 & 2.50 nominal section widths are rated for 75 mph.
* Maximum speed the tires are tested to, providing a safety factor over the design speed.
Motorcycle Tire Load Index Chart
LI = Load Index. KG = 2.2 lbs.
LI KG LBS LI KG LBS LI KG LBS LI KG LBS LI KG LBS LI KG LBS
43 155 342 51 195 430 59 243 536 67 307 677 75 387 853 83 487 1074
44 160 353 52 200 441 60 250 531 68 315 694 76 400 882 84 500 1102
45 165 364 53 206 454 61 257 567 69 325 716 77 412 908 85 515 1135
46 170 375 54 212 467 62 265 584 70 335 739 78 425 937 86 530 1168
47 175 386 55 218 481 63 272 600 71 345 761 79 437 963 87 545 1201
48 180 397 56 224 494 64 280 617 72 355 783 80 450 992 88 560 1235
49 185 408 57 230 507 65 290 639 73 365 805 81 462 1019 89 580 1279
50 190 419 58 236 520 66 300 661 74 375 827 82 475 1047 90 600 1323
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How to Read Tire Size Labels

The load rating corresponds to the total load carrying capacity of the tire at the speed indicated by the speed symbol. The Aspect Ratio equals the height divided by the width times 100.

Street Tire Size Designations
Metric Designation

Metric Tire Size Designation Label

Inch Designation

Inch Tire Size Designation Label

Alphabetical Designation

Alphabetical Tire Size Designation Label

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Also: Choosing Dual-Sport Tires for the Suzuki DR650

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