* Speed ratings

Motorcycle tyres Speed Ratings

Speed rating

You will find your speed rating on the side of your tyre. It is always represented by a letter.
Typical complete mc tyre description: 120/70ZR17 (58W). Speed rating ZR - First letter is the speed rating and the second letter, if it is there, is an "R" (radial tire) or a "B" (bias tire). Lack of a second letter means it is a bias or non-belted tire. Last letter - "W" generally means higher speed rated than a standard Z rated tire.

Symbol Max Speed Symbol Max Speed Symbol Max Speed
J 62 mph/100 kmh K 68 mph/110 kmh L 75 mph/120 kmh
M 81 mph/130 kmh N 87 mph/140 kmh P 93 mph/150 kmh
Q 99 mph/160 kmh R 106 mph/170 kmh S 112 mph/180 kmh
T 118 mph/190 kmh U 124 mph/200 kmh H 130 mph/210 kmh
V 149 mph/240 kmh W 168 mph/270 kmh Y 186 mph/300 kmh


Motorcycle tyres's speed ratings are established with new production tyres. MC tyres that have been repaired (patched), abused (used at a track day), or are worn down somewhat no longer qualify for their original speed rating.

Actual tyre speed and performance capability also depends on factors such as inflation pressure, load, tyre condition, wear and driving conditions.

Speed ratings are based on laboratory tests where the tire is pressed against a large diameter metal drum to reflect its appropriate load, and run at ever increasing speeds (in 6.2 mph steps in 10 minute increments) until the tire's required speed has been met.

It is very important that you check your speed rating before buying your mc tyres. You should always follow the motorcycle manufacturer's recommendations, if any, concerning the use of speed rated tyres and ensure that you are familiar with the speed markings of the tyres that you buy.

Motorcycle tyres - Speed ratings


 

 
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