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When selecting new tires, make sure they meet the requirements of your motorcycle and its expected usage. Always refer to the owner's manual and tire manufacturer's website for recommended tire size, construction, performance, and suggested air pressure.
Street bike tires are commonly measured in Millimeters, while the rim diameter is in inches. Width x Aspect Ratio x Rim Diameter.
Load Index: This number represents the load-carrying maximum capacity at maximum pressure.
Example: 58 = 520 lbs. 69 = 720 lbs.
See the chart in the tire’s description on our website for information for that particular tire’s load ratings.
Speed Rating: This letter represents the maximum speed under recommended load capacity
Example: S = 112 mph W = 168 mph
See the chart in the tire’s description on our website for information for that particular tire’s speed ratings.
Note: A letter “Z” indicates maximum speed capability in excess of 149 mph and is usually displayed after the aspect ratio.
Aspect Ratio: The aspect ratio is the height of the sidewall in relation to the width of the tread. For example, if you have a tire that is 160/60R-17, the aspect ratio is 60% of the tread width (the first number in the tire size), creating a 96-millimeter sidewall height.
Note to remember: Width is in millimeters, aspect ratio is a percentage, and rim diameter is in inches.
Radial: Radial constructed tires utilize both ply and breaker (or belt) cords. The ply cords extend from bead to bead at approximately a 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 comfort, and higher tread puncture resistance.
Bias-belted: A bias-belted tire utilizes ply cords that extend diagonally from bead to bead (relative to the centerline) and a stabilizer belt across the width of the tire.
Advantages: This type of tire provides a smooth ride that is similar to the bias tire but lessens rolling resistance due to the belt's increasing tread stiffness. The plies and belts are at different angles, which improves performance compared to non-belted bias tires.
Bias: 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 criss-cross pattern.
Advantages: The design allows the entire tire body to flex easily, giving a comfortable ride on rough surfaces.
Metric | Alpha | Inches | ||
---|---|---|---|---|
80/90 | MH90 | 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 | 4.25/4.50 | |||
120/90 | MR90 | 4.25/4.50 | ||
130/90 | MT90 | 5.00/5.10 |
Metric | Alpha | Inches | ||
---|---|---|---|---|
110/90 | MP85 | 4.00/4.75 | ||
120/90 | MR90 | 4.50/4.75 | ||
130/80 | 5.00/5.10 | |||
110/90 | MN90 | 3.75/4.00 | ||
130/90 | MT90 | 5.00/5.10 | ||
140/80 | 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 | ||
160/80 | 6.80/7.00 | |||
180/55 | 7.00/7.25 | |||
200/60 | 7.90/8.00 | |||
230/50 | 9.50 |
Code | Pounds | Kilograms | ||
---|---|---|---|---|
33 | 254 lbs | 115 kg | ||
34 | 260 lbs | 117 kg | ||
35 | 267 lbs | 121 kg | ||
36 | 276 lbs | 125 kg | ||
37 | 282 lbs | 128 kg | ||
38 | 291 lbs | 132 kg | ||
39 | 300 lbs | 136 kg | ||
40 | 309 lbs | 140 kg | ||
41 | 320 lbs | 145 kg | ||
42 | 331 lbs | 150 kg | ||
43 | 342 lbs | 155 kg | ||
44 | 353 lbs | 160 kg | ||
45 | 364 lbs | 165 kg | ||
46 | 375 lbs | 170 kg | ||
47 | 386 lbs | 175 kg | ||
48 | 397 lbs | 180 kg | ||
49 | 408 lbs | 185 kg | ||
50 | 419 lbs | 190 kg | ||
51 | 430 lbs | 195 kg | ||
52 | 441 lbs | 200 kg | ||
53 | 454 lbs | 206 kg | ||
54 | 467 lbs | 212 kg | ||
55 | 481 lbs | 218 kg | ||
56 | 494 lbs | 224 kg | ||
57 | 507 lbs | 230 kg | ||
58 | 520 lbs | 236 kg | ||
59 | 536 lbs | 243 kg | ||
60 | 551 lbs | 250 kg | ||
61 | 567 lbs | 257 kg | ||
62 | 584 lbs | 265 kg | ||
63 | 600 lbs | 272 kg | ||
64 | 617 lbs | 279 kg | ||
65 | 639 lbs | 289 kg | ||
66 | 661 lbs | 299 kg | ||
67 | 677 lbs | 307 kg | ||
68 | 694 lbs | 314 kg | ||
69 | 716 lbs | 324 kg | ||
70 | 739 lbs | 335 kg | ||
71 | 761 lbs | 345 kg | ||
72 | 783 lbs | 355 kg | ||
73 | 805 lbs | 365 kg | ||
74 | 827 lbs | 375 kg | ||
75 | 853 lbs | 387 kg | ||
76 | 882 lbs | 400 kg | ||
77 | 908 lbs | 412 kg | ||
78 | 937 lbs | 425 kg | ||
79 | 963 lbs | 437 kg | ||
80 | 992 lbs | 450 kg | ||
81 | 1,019 lbs | 462 kg | ||
82 | 1,047 lbs | 475 kg | ||
83 | 1,074 lbs | 487 kg | ||
84 | 1,102 lbs | 500 kg | ||
85 | 1,135 lbs | 515 kg | ||
86 | 1,168 lbs | 530 kg | ||
87 | 1,201 lbs | 545 kg | ||
88 | 1,235 lbs | 560 kg | ||
89 | 1,1279 lbs | 580 kg | ||
90 | 1,323 lbs | 600 kg |
Rating | MPH | Km/H | ||
---|---|---|---|---|
J | 62 mph | 100 km/h | ||
K | 68 mph | 110 km/h | ||
L | 74 mph | 120 km/h | ||
M | 81 mph | 130 km/h | ||
N | 87 mph | 140 km/h | ||
P | 94 mph | 150 km/h | ||
Q | 100 mph | 160 km/h | ||
R | 106 mph | 170 km/h kg | ||
S | 112 mph | 180 km/h | ||
T | 118 mph | 190 km/h | ||
U | 124 mph | 200 km/h | ||
H | 130 mph | 210 km/h | ||
V or VB | 149+ mph | 240 km/h | ||
Z or ZR | 149+ mph | 240+ km/h | ||
W | 168 mph | 270 km/h | ||
Y | 186 mph | 300 km/h |
Checking tire pressure is the most important tire maintenance function you can perform. Check cold tire pressure frequently with a good-quality gauge that holds a reading - and always before extended trips. Inspect tires frequently for damage, and always heed warning signs such as vibration, handling instability, rubbing, or tire noise that occurs during the operation of your motorcycle.
Maintenance: Regular inspection of the motorcycle generally, and of wheels/tires in particular, is suggested because tire mileage and performance are adversely affected by a poorly maintained vehicle. Refer to the owner's manual for recommended suspension settings. Improperly maintained components and incorrect or unbalanced front fork pressures will affect stability. Low suspension pressure will generate excessive tire stresses.
Sidewall treatment: Use a mild soap solution to clean sidewalls, white striping or lettering. Rinse off with plain water. Never apply any other material, cleaners or dressings to enhance sidewall appearance. These may degrade the rubber and remove inherent ozone-cracking/weather-checking resistance.
Tire storage precautions: The treatment that tires receive during extended periods of inactivity may directly affect their mileage and performance
Safety tips: 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.
Air pressure: Always maintain the recommended tire pressure for the type of motorcycle that is being ridden; check the owner’s manual. Underinflated tires may cause wheel damage when ridden on rocky, rough terrain and allow the motorcycle to squirm or wander on smooth, hard terrain. Overinflation may damage the tires and cause an unnecessarily harsh ride. To accurately measure tire pressure, use a standard tire pressure gauge.
Inspection: Check for cuts and gouges that may cause air leakage. Also, check the tires for missing knobs and excessively worn tread. Wheels: To avoid loss of control or injury, make sure axle nuts are tight and secured. Grasp each tire at the front and rear and try to rock it on its axle to detect worn-out bearings or loose nuts. There should be no free play or slip as you rock the wheel. Inspect wheels for broken or loose spokes and for cracks on the hub or rim.
Tire Mounting Guidelines: Only specially trained persons should mount tires. Improper mounting can cause tire explosion and serious injury. Never exceed the tire manufacturer’s recommended maximum pressure when seating any tire. Never inflate above your tire manufacturer’s recommended psi amount to seat beads. Maximum pressure can be found on the sidewall of each tire.
Minimum tread depth: Excessively worn tires are more susceptible to penetrations. Always remove motorcycle tires from service before they reach the tread-wear indicator bars (1/32 of an inch tread pattern depth remaining). Worn/unworn tire combinations and worn tires used in wet conditions can result in deteriorated handling.
The charts and info 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 recommendations and front-to-rear tire matching. Incorrect selection can result in tire failure or loss of control with serious injury or death.