Tire Identification
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Tire type, size, aspect ratio and speed rating are encoded in the letters and numbers imprinted on the side wall of the tire. Refer to the following chart to decipher the tire identification code.
Performance tires have a speed rating letter after the aspect ratio number. The speed rating is not always printed on the tire sidewall. These ratings are:
- Q up to 99 mph
- S up to 112 mph
- T up to 118 mph
- U up to 124 mph
- H up to 130 mph
- V up to 149 mph
- W (consult the tire manufacturer for the specific speed rating)
- Z more than 149 mph (consult the tire manufacturer for the specific speed rating)
An All Season type tire will have either M + S, M AND S or M-S (indicating mud and snow traction) imprinted on the side wall.