Tyre Speed Rating
The speed rating for the tyre is the maximum speed a tyre can sustain under its recommended load capacity.
Speed ratings are based on scientific tests where the tyre is run at speeds in 6.2 mph steps in 10 minute increments until the required speed has been met. The speed rating can be found on the tyre sidewall as a single letter after the load index. Do not exceed the speed rating and wherever possible do not fit tyres of different speed ratings. Choosing a tyre with a lower speed rating than recommended by the vehicle manufacturer can invalidate an insurance policy.