1994 Buick Skylark Owner's Manual - Page 239

which all passenger car tires must meet under the No. Federal Motor Vehicle Safety Standard 109. Grades of B andA represent higher levels performance on the laboratory test wheel than minimum required by law. the Warning: The temperature gradefor this tireis established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading,either separately orin combination, can cause heat buildup possible tire failure. and These gradesare molded onthe sidewalls of passenger 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 Federal safety to requirements in addition these grades. to In most cases, you will not needhave your wheels to aligned again. However, you notice unusual tire wear if or your vehicle pulling one way or the other, the to aligfiment may need be reset.If you notice your your vehicle vibrating when driving on a smooth road, wheels may need be rebalanced. to Wheel Replacement Replace any wheel that bent, cracked or badly rusted. is If wheel nuts keep coming loose, wheel, wheel bolts, the If the and wheel nuts should be replaced. wheel leaks air, replaceit (exdept some aluminum wheels, which can sometimes be repaired). See your Buick dealer if of any these conditions exist. Your dealer will know the kind wheel you need. of Each new wheel should have the same load carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces. Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced carefully at the factoryto give you the longest tirelife and best overall performance. If you need to replace any your wheels, wheel bolts, of or wheel nuts, replace them only with new GM original equipment parts. This way, you wi€l be sure to have the right wheel, wheel bolts, and wheel nuts your Buick for model. 237