How to Decode Tire Size and Other Data
Tire codes hold the keys to important information
Choosing the right-sized tire for your car can be as simple as checking the tires already installed (or using our tire selector). You’ll also find the recommended tire size, as well as the speed and load ratings for your vehicle, on a placard in the driver’s doorjamb, in the glove compartment, or on the fuel-filler door. Check the vehicle owner’s manual for additional information, too.
In replacing the tires on a car that was bought used, it is especially important to check for the recommended size because it is possible that the previous owner might not have installed the proper tires. For sports cars, be sure to compare front and rear tires because they may be different.
Here’s what those cryptic sidewall codes mean for a typical tire.