1993 Buick Regal Owner's Manual - Page 246

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. A CA ITION: Buying New Tires To find out what kind and size of tires you need, look at the Tire-Loading Information label. The tires installed on your vehicle when it 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 Specnumber. 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 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). you I while driving. If youau ~ tires IO lose c sizes or Mixing u r coui4 m x of different types (radial and bias-belted tires), the vehicle may not handle properly, and you could have a;k crash. Be sure to use the size and type. same ;L: % :*. .LLL 1 . : , T,?' .-< . n though. It was developed for limited use on vehicle. I YOUI'..~ Uniform Tire Quality Grading The following information relates to the system developed by the United States National Highway Traffic Safety Administration which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in the United States.) If you ever replace your tires with those 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. Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and a half (1 244