Tire and Wheel Inspection
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
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. A replacement tire should have the same TPC rating.
| Callout | Component Name |
|---|---|
| 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