1994 Oldsmobile Achieva Owner's Manual - Page 201

when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high 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 passengercar tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is established for a tire that is properly inflatedand not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure. These grades are molded on the sidewalls of passenger car tires. While the tires available as standardor optional equipment on General Motors vehicles may varywith respect to these grades, all such tires meet General Motors performance standards and have been approved for use on General Motors vehicles. All passenger type (P Metric) tires must conform to Federal safety requirements in addition to these grades. 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 need to have not your wheels alignedagain. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may needto be reset. If you notice your vehicle vibratingwhen driving on a smooth road, your wheels may need to be rebalanced. Your dealerwill know the kind of wheel you need. Each new wheelshould have the same load carrying capacity,diameter, width, offset, and be mounted the same way as the one it replaces. If you need to replace any of your wheels, wheelbolts, or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts, and wheel nuts for your Oldsmobile model. Wheel Replacement Replace any wheel that is bent, cracked or badlyrusted. If wheel nuts keep coming loose,the wheel, wheel bolts, and wheel nuts should be replaced. the If wheel leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). See your Oldsmobile dealer i any of these conditions exist. f 199