1994 Chevrolet Corvette Owner's Manual - Page 208

0 The tire has a puncture, cut, or other damage that can't be repaired well because of the size or location of the damage. I When It's Time for New Tires One way to tell when it's timefor new tires is to check the treadwearindicators, tires have which will appear when your only 2/32 inch (1.6 mm) or lessof tread remaining. You need a new tire if 0 You can see the indicators at three or more places around thetire. You can see cord or fabric showing through the tire's rubber. 0 The tread or sidewall is cracked, cut or snagged deep enoughto show cord or fabric. 0 The tire has a bump, bulge or split. Buying New Tires To find out what kind andsize of tires you need, look at 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 you get new tires, get ones with that same TPC Spec number. That way, yobr 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, the TPC number will be followed by a "MS" (for mud and snow). If you ever replace your tires withthose 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. Uniform Tire Quality Grading The following information relates to the system developed by the United States National Highway TrafficSafety Administration which grades tires by treadwear, traction andtemperature performance. (This applies only to vehicles sold in the United States.) Treadwear The treadwear grade is a comparative rating based on the wearrate of the tire when tested under controlled conditions 207...