1993 Buick LeSabre Owner's Manual - Page 262

which all passengercar tires must meet under the No. Federal Motor Vehicle Safety Standard 109. Grades the B andA represent higher levels of performance on laboratory test wheel than minimum required by law. the Warning: The temperature grade for this tire is established for a tire that properly inflated and not is overloaded. Excessive speed, underinflation, or excessive loading,either separately or in combination, can cause heat buildup and possible tire failure. Those grades are molded on the sidewalls passenger of car tires. While the tires availableas standard or optional equipment on General Motors vehicles may vary with 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. to In most cases, you will not need have your wheels aligned again. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the If alignment may need to be reset. you notice your vehicle vibrating when driving on a smooth road, your wheels may needto be rebalanced. Wheel Replacement Replace any wheel that bent, cracked or badly rusted. is If wheel nuts keep coming loose, the wheel, wheel bolts, If and wheel nuts should be replaced. the wheel leaks air out, replace it (except some aluminum wheels, which can sometimes be repaired). See your Buick dealer if any of these conditions exist. Your dealer will know the kind of wheel you need. Each new wheel should have same load carrying the capacity, diameter, width, offset, and be mounted the same way asthe one it replaces. If you need to replace any of your wheels, wheel bolts, or wheel nuts, replace them only with new GM original the equipment parts. This way, you will be sure to have right wheel, wheel bolts, and wheel nuts for your Buick model. Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced you carefully at the factory to give the longest tire life and best overall performance. 260