GM Service Manual Online
For 1990-2009 cars only

To find out what kind and size of tires you need, look at the tire and loading information label attached to your vehicle. See Loading the Vehicle for a label example and where it is attached to your vehicle.

Make sure the replacements are the same size, load range, speed rating and construction type (bias, bias-belted or radial) as your original tires.

CautionMixing tires could cause you to lose control while driving. If you mix tires of different sizes, brands, or types (radial and bias-belted tires), the vehicle may not handle properly, and you could have a crash. Using tires of different sizes, brands, or types may also cause damage to your vehicle. Be sure to use the correct size, brand, and type of tires on all wheels. It is all right to drive with your compact spare temporarily, as it was developed for use on your vehicle. See Compact Spare Tire .

Caution: If you use bias-ply tires on the vehicle, the wheel rim flanges could develop cracks after many miles of driving. A tire and/or wheel could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on the vehicle.