GM Service Manual Online
For 1990-2009 cars only

Irregular or premature tire wear has many causes, including the following:

    • Incorrect inflation pressure
    • Lack of regular rotation
    • Driving habits
    • Improper tire and wheel alignment

If tire and wheel alignment is reset due to a tire wear condition, always rest the toe as close to zero degrees as the specification allows.

Rotate the tires if you notice any of the following conditions:

    • Front and rear tire wear is unequal
    • The tread of any tire wear is uneven
    • Left and right fron tire wear is unequal

Check tire and wheel alignment if you notice any of the following conditions:

    • Left and right fron tire wear is unequal
    • The tread of any front tire wear is uneven
    • The front tire treads have a scuffed appearance with "feather" edges on one side of the tread ribs or blocks