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aging. This area should be free of

grease, gasoline, or other substances that can deteriorate rubber.

Parking for an extended period can

cause flat spots on the tires that may result in vibrations while driving.

When storing a vehicle for at least a month, remove the tires or raise the

vehicle to reduce the weight from the tires.

Buying New Tires

GM has developed and matched specific tires for the vehicle. The

original equipment tires installed were designed to meet General

Motors Tire Performance Criteria Specification (TPC Spec) system

rating. When replacement tires are needed, GM strongly recommends buying tires with the same TPC

Spec rating.

GM's exclusive TPC Spec system considers over a dozen critical

specifications that impact the

overall performance of the vehicle, including brake system


performance, ride and handling,

traction control, and tire pressure monitoring performance. GM's

TPC Spec number is molded onto the tire's sidewall near the tire

size. If the tires have an all-season tread design, the TPC Spec

number will be followed by MS for mud and snow. See Tire Sidewall

Labeling 0 351, for additional


GM recommends replacing worn tires in complete sets of four.

Uniform tread depth on all tires will help to maintain the

performance of the vehicle.

Braking and handling performance may be adversely affected if all the tires are not replaced at the same

time. If proper rotation and

maintenance have been done, all four tires should wear out at

about the same time. See Tire

Rotation 0 362 for information on proper tire rotation. However, if it


is necessary to replace only one axle set of worn tires, place the new tires on the rear axle.

Winter tires with the same speed rating as the original equipment

tires may not be available for H, V, W, and ZR speed rated tires. Never exceed the winter tire's maximum speed capability when using

winter tires with a lower speed rating.


{ Warning

Tires could explode during

improper service. Attempting to mount or dismount a tire could cause injury or death. Only your dealer or authorized tire service center should mount or

dismount the tires.