1998 Oldsmobile Bravada Owner's Manual - Page 283

I Uniform Tire QualityGrading CAUTION: Mixing tires could cause you to lose control while driving. If you mix tires of different sizes or types (radial andbias-belted tires), thevehicle may not handle properly, and you could have a crash. Using tires of different sizes may also cause damage to your vehicle. Be sure touse the same size and type tires on all wheels. with your compactspare It's all right to drive (if you have one). It was developed for use on your vehicle. The followinginformation relates to the system developed by the United States National Highway Traffic Safety Administration, which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in the United States.) The grades aremolded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading system does not apply to deep tread,winter-type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect tothese grades, they must also conform toFederal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards. A CAUTION: If you use bias-ply tires on your vehicle, the wheel rim flanges could develop cracks after many miles of driving. A tire and/orwheel could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on your vehicle.