1994 Cadillac Seville Owner's Manual - Page 307

Buying New Tires To find out what kind and size tires youneed, look at the of Tire-Loading Information label. The tires installed on your vehicle when it was new a Tire had Performance Criteria Specification (TPC Spec) numberon each tire's sidewall. When yowget new tires, ones with that,same TPC Spec get number. That way, your vehicle will continue to have tires that are designed to give.proper endurance, handling, speed rating, traction, ride and other things during normal service 'your vehicle. your tires have on If an all-season tread design, the-TPC number will be followed bya "MS" (for mud and snow). I you everreplace your tires with those not having a TPC f Spec number, make sure they are thesame size, load range, speed rating and construction type (bias, bias-belted radial) as your original tires. or Uniform Tire.QualityGrading The following information relates to thesystem developedby the United States National Highway Traffic Safety Administrationwhich grades tires by treadwear, traction and.temperature performance. (This applies only to vehicles sold in United States.) the