2009 Hyundai Elantra Owner's Manual - Page 300

Maintenance Tire traction Tire traction can be reduced if you drive on worn tires, tires that are improperly inflated or on slippery road surfaces. Tires should be replaced when tread wear indicators appear. To reduce the possibility of losing control, slow down whenever there is rain, snow or ice on the road. Tire maintenance In addition to proper inflation, correct wheel alignment helps to decrease tire wear. If you find a tire is worn unevenly, have your dealer check the wheel alignment. When you have new tires installed, make sure they are balanced. This will increase vehicle ride comfort and tire life. Additionally, a tire should always be rebalanced if it is removed from the wheel. 1 5,6 7 4 2. Tire size designation 2 3 1 I030B04JM Tire sidewall labeling This information identifies and describes the fundamental characteristics of the tire and also provides the tire identification number (TIN) for safety standard certification. The TIN can be used to identify the tire in case of a recall. 1. Manufacturer or brand name A tire's sidewall is marked with a tire size designation. You will need this information when selecting replacement tires for your car. The following explains what the letters and numbers in the tire size designation mean. Example tire size designation: (These numbers are provided as an example only; your tire size designator could vary depending on your vehicle.) P205/55R16 89H P - Applicable vehicle type (tires marked with the prefix "P" are intended for use on passenger cars or light trucks; however, not all tires have this marking). 205 - Tire width in millimeters. 55 - Aspect ratio. The tire's section height as a percentage of its width. R - Tire construction code (Radial). 16 - Rim diameter in inches. Manufacturer or Brand name is shown. 7 38