1993 Buick Skylark Owner's Manual - Page 246

The tire has a puncture, cut, or other damage that can't be repaired well because the size or location of of the damage. A CAUTION: Mixing tires could cause you lose control to while driving. If you mix tires of different sizes or types (radial and bias-belted tires), the vehicle To find out what kind and size tires you need, look at of may not handle properly, and you could have a the Tire-Loading Information label. crash. Be sure to use the same size and type The tires installed on your vehicle when it was new had tires on all wheels. a Tire Performance Criteria Specification (TPC Spec) It's all right to drive with your compact spare, number on each tire's sidewall. When you get new tires, though. It was developed forlimited use on your TPC Spec number. That way, get ones with that same vehicle. Buying New Tires I 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 Uniform Tire Quality Grading your vehicle.If your tires have an all-season tread The following information relates the system to design, the TPC number will be followed a "MS" by developed by the United States National Highway (for mud and snow). Traffic Safety Administration which grades tires by If you ever replace your tires with those not having a treadwear, traction and temperature performance. TPC Spec number, make sure they the same size, are (This applies only vehicles sold in the United States.) to 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 rateof the tire when tested under controlled conditions on a specified government test course. For 150 example, a tire graded would wear one and a half 245