Tire sizes:

Learn what tire sizing means - it's helpful when you buy tires.

Tire sizes: discover how to interpret tire sizes and find the right tires for your vehicle.

Adhere to the manufacturer's recommendations on tire sizes when it's time to buy tires. Check with your tire dealer for correct tire dimensions for your vehicle.

If you live in a cold weather climate, you may need snow tires for the winter months. If you want to change to a different tire, refer to the custom wheels article for recommendations.

The tires on your vehicle are literally where the rubber meets the road. Make sure you're riding on the best with help from Advance Auto Parts, and keep in mind we carry a full selection of quality auto parts and supplies.

Here's why you shouldn't buy tires without understand tire sizing and tire sizing terminology.

Installing the correctly sized tires on your vehicle is important for proper braking, steering response, handling and ride quality. Installing the wrong sized tires can result in poor vehicle control and less than optimum tire life.

If you up-size or down-size your tires from OEM specs, you'll need to have your speedometer adjusted accordingly. If in doubt, you should always consult with a tire specialist at a reputable tire outlet regarding recommended tire sizing and options.

How to select correct tire sizes and buy tires on your own:

When determining proper tire sizes, look to the manufacturer's recommended tire size for your vehicle. It's usually specified in the owner's manual or on a sticker located on one of the doorsills.

  1. The numbers and letters on your tire sidewall all have meaning. Example: P215/65R16. Each number and letter is important.
  2. The first number in the tire sizing code refers to the edge-to-edge width of the tread in millimeters. The bigger the number, the wider the tread and vice versa.
  3. The middle number in the tire sizing code refers to the percentage of sidewall height in relation to the tread width. The smaller the number, the shorter the sidewall height.
  4. Almost all passenger car tires manufactured today are radials. The "R" designation stands for radial construction.
  5. The last number stands for what size wheel the tire will fit. In this case, the tire will fit a 16" wheel.
  6. Performance tires have an additional letter before the "R" to designate the top safe speed rating. A "YR" tire is a radial with a top speed of 186 mph!


When it's time to buy tires, refer to Advance Auto Parts for expert advice.

Trust Advance Auto Parts for the quality auto parts required to handle your vehicle maintenance tasks.