Tyre and Wheel Inspection
The tyres on all new production models have a tyre performance criteria (TPC) rating number moulded on the sidewall. The TPC rating will appear as a 4-digit number preceded by the letters TPC SPEC on the tyre wall near the tyre size. A replacement tyre should have the same TPC rating.
Tyre Wear
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| (1) | Hard Cornering/Underinflation |
| (2) | Incorrect Alignment/Lack of Rotation |
| (3) | Incorrect Alignment/Non-uniform Tyre |
| (4) | Heavy Acceleration/Over inflation |
| (5) | Wear Indicator |
Inspect the tyre and wheel assemblies for the following conditions:
| • | Unusual wear such as cupping, flat spots, and/or heel-and-toe wear |
| | These conditions can cause tyre growl, tyre 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. |
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