Step 1. Finding the Tire Size, Load and Speed Ratings Appropriate for Your Vehicle
If you are unsure of your vehicle's tire size the best place to find this information is on the vehicle itself. Do not rely on websites or even your vehicle's owner's manual to determine your tire size. Modern vehicles offer many tire and wheel options so it is always best to check your vehicle itself to determine what tire you need.

First, find your vehicle load and tire information placard. This placard is usually located on the door jamb of the driver's door. See an example of this placard in the picture below.


Next, you will want to look for your tire size and service description on the tire itself. See the picture below for help on finding your tire size on your tire's sidewall.


The tire size listed on the tire information placard should match that of the tires on your car. If the tires on your car are not original, the "service description" may not match exactly, this is generally ok. Make note of the size and service descriptions listed on both your tire information placard and your tires themselves then proceed to Step 2. Determining what Replacement Tires meet your Vehicle's Requirements.

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