Buying New TiresTo find out what kind and size of tires your vehicleneeds, look at the tire and loading information label. Formore information about this label and its location onyour vehicle, see Loading Your Vehicle on page 4-33.The tires installed on your vehicle when it was new had aTire Performance Criteria Specification (TPC Spec)number on each tire’s sidewall. When you get new tires,GM recommends that you get tires with that same TPCSpec number. That way your vehicle will continue to havetires that are designed to give proper endurance,handling, speed rating, load range, traction, ride andother things during normal service on your vehicle. If yourtires have an all-season tread design, the TPC numberwill be followed by an “MS” (for mud and snow).If you ever replace your tires with those not having aTPC Spec number, make sure they are the same size,load range, speed rating and construction type (bias,bias-belted or radial) as your original tires.{CAUTION:Mixing tires could cause you to lose controlwhile driving. If you mix tires of different sizesor types (radial and bias-belted tires), thevehicle may not handle properly, and youcould have a crash. Using tires of differentsizes may also cause damage to your vehicle.Be sure to use the same size and type tires onall wheels. It’s all right to drive with yourcompact spare temporarily, it was developedfor use on your vehicle. See “Compact SpareTire” in the index.{CAUTION:If you use bias-ply tires on your vehicle, thewheel rim flanges could develop cracks aftermany miles of driving. A tire and/or wheelcould fail suddenly, causing a crash. Use onlyradial-ply tires with the wheels on your vehicle.5-73
