1994 GMC Jimmy Owner's Manual - Page 281

When It's Time for New Tires One way to tell when it's time for new tires is tocheck the treadwear indicators, which willappear when your tires have only 2/32 inch (1.6 mm) or less of tread remaining. V 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. The tread or sidewall is cracked, cut or snagged deep enough to show cord or fabric. 0 The tire has a bump,bulge or split. The tire has a puncture, or other damage that can't be repaired well cut, because of the size or location the damage. of Buying New Tires To find out what kind and size tires you need, of look at the CertificatiodTire label. The tires installed on your vehicle whenwas new hada Tire Performance it Criteria Specification (TPCSpec) number oneach tire's sidewall. When you get new tires, get ones with that same Spec number. That way, your TPC vehicle will continue to have that are designed to give tires proper endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle. your tires have an all-season tread If design, the TPC number willbe followed by a "MS" (for mud and snow). 6-45