1998 Oldsmobile Aurora Owner's Manual - Page 299

Buying New Tires To find out what kind and size of tires you need, lookat the Tire-Loading Information label. The tires installed on your vehicle when it was new had a Tire Performance Criteria Specification(TPC Spec) number on each tire's sidewall. When you get new tires, get ones with that same TPC Specnumber. That way your vehicle will continue to have tires that are designed to give proper endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle. If your tires have an all-season tread design, theTPC number will be followed by an "MS" (for mud and snow). Mixing tires could cause to lose control while you driving. If you mix tires of different sizes or types (radial and bias-belted tires), the vehicle may not handle properly, and you could havea crash. Using tires of different sizes may also cause damage to your vehicle. Besure to use the same size and type tires on all wheels. It's all right to drive with your compact spare, though. It was developed for use on your vehicle. If you ever replaceyour tires with those not having a TPC 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. If you use bias-ply tires on your vehicle, the wheel rim flanges could develop cracks after many milesof driving. A tire and/or wheel could fail suddenly, causing a crash. only radial-ply Use tires with thewheels on your vehicle. 6-47