Look for a number structure like this example: P215/60R16. It will run along the outside face of the sidewall. First number, 215, is the width of the tire tread measured in millimetres the profile is the height of the tire from the ground to the rim measured as a percentage. In this example, the height of the tire is 60 percent of the width of the tire. Buy new tires for your car or you have any query about tires; you can visit us at PARTSAVATAR AUTO PARTS, TORONTO