For 1990-2009 cars

The tires on all new production models have a tire performance criteria (TPC) rating number molded on the sidewall. The TPC rating will appear as a 4 -digit number preceded by the letters TPC SPEC on the tire wall near the tire size. The replacement tire should have the same TPC rating.

#### Tire Wear

(1) | Hard Cornering/Underinflation
(2) | Incorrect Alignment/Lack of Rotation
(3) | Incorrect Alignment/Non-uniform Tire
(4) | Heavy Acceleration/Over inflation
(5) | Wear Indicator

Inspect the tire and wheel assemblies for the following conditions:

• | Unusual wear such as cupping, flat spots, and/or heel-and-toe wear

| These conditions can cause tire growl, tire howl, slapping noises, and/or vibrations throughout the vehicle.

• | Proper inflation to specifications for the vehicle

• | Bulges in the sidewalls

| Do not confuse bulges, which are an abnormal condition, with normal ply splices which are commonly seen as indentations in the sidewall.

• | Bent rim flanges