1996 Chevrolet S10 Pickup Owner's Manual - Page 276

Temperature A, B, C The temperature grades are A (the highest), B, and C, representing the tire'sresistance to the generation of heat and its ability dissipate heat when tested under to controlled conditions on a specified indoor laboratory test wheel. Sustainedhigh temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the No. Federal Motor Vehicle Safety Standard 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required law. by Warning: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure. - Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. In most cases, you will not need have your wheels to you aligned again. However, if notice unusual tire wear or your vehicle pulling one way the other, the or alignment may needto be reset. If you notice your vehicle vibrating whendriving on a smooth road, your wheels may need to be rebalanced. Wheel Replacement Replace any wheel that is bent, cracked, badly rusted or or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should replaced. If the be wheel leaks air, replace it (except some aluminum wheels, which can sometimesbe repaired). See your GM dealer if any of these conditions exist. 6-50