Similar to tread design or tire size itself, tires all have speed ratings that measure the threshold of speed a vehicle can ...

I'd like to know how critical it is to follow the speed rating on a tire when replacing it. What is the impact if a car's original specs are for an H rated tire and ...

Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...