1995 Chevrolet Corvette Owner's Manual - Page 286

Tire Rotation The tires on your Corvette are directional, asymmetrical, and are different sizes front torear. Due to this, your tires should not be rotated.Each tireand wheel should be used only in the position isin. it You need a new tire if You can see the indicators at three or more places around the tire. You can see cord or fabric showing through the tire's rubber. 0 When it's Time for New Tires The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric. The tire has abump, bulge or split. The tire has a puncture, cut, or other damage that can't be repaired well because of the size or location of the damage. 0 One way totell when it's time for new tires is to check the treadwear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or lessof tread remaining. 6-51