Speed Rated Tires

Q: I got a price quote on tires but the shop wants to know whether or not my tires are “T” or “H” rated. What is the difference?

A: Some high performance tires have speed ratings. Tires rated for higher speeds generally have rigid sidewalls. This type of construction increases the performance characteristics, but commonly reduces the comfort of the ride. In addition, the tread on a high speed performance rated tire is commonly soft to aid in traction. The softer the tread, the quicker the tire wears. “T” rated tires are rated for 118 mph and “H” rated tires are rated for 130 mph. Technically, speed rated tires are designed to be stable up to and at the rated limit. This does not mean that drivers should exceed posted speed limits.