1995 Pontiac Firebird Owner's Manual - Page 285

You need a new tire if 0 You can see the indicators at three or more places around the tire. 0 You can see cord fabric showing through the tire's or rubber. e The tread or sidewall is cracked, cutor snagged deep enough to show cord or fabric. 0 The tire has a bump, bulge or split. 0 design, the TPC number be followedby an "MS" will (for mud and snow). If you ever replaceyour tires with those not having a TPC Spec number, make sure they are the same size, load range, speed rating construction type (bias, and bias-belted or radial) as your original tires. The tire has a puncture, cut, or other damage that can't be repaired well because the sizeor location of of the damage. Buying New Tires To find out what kind and sizetires you need, look at of the Tire-Loading Information label. The tires installed on your vehicle whenit was new had a Tire Performance Criteria Specification (TPC Spec) number on each tire's sidewall. When get new tires, you get ones with that same TPC Spec number. That way, your vehiclewill 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 all-season tread an 6-52