1996 Cadillac DeVille Owner's Manual - Page 300

When It's Time for New Tires 0 0 The tire has a bump, bulgeor split. The tire has a puncture, cut or other damage that can't be repaired well because of the sizeor location of the damage. 1 A One way to tell when it's time for-new tiresis to check the treadwear indicators, which will appear when your tires have only 1/16 inch (1.6mm) or less of tread remaining. Buying New Tires To find out what kind and size tires you need, look at of the Tire-Loading Information label. You need a new if any ofthe following statements tire are true: You can see the indicators at three more places or around the tire. The tires installed on your vehicle when it was new ha a Tire Performance Criteria Specification Spec) (TPC number on each tire's sidewall. When you get new tire TPC way get ones with that same Spec number. That your vehicle will continue to have tires that are design to give proper endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle.If your tires havean all-season tread by design, the TPC number will be followed an "MS" (for mud and snow). You can see cord or fabric showing through the tire's rubber. The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric. If you ever replace your 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. 6-39