2009 Cadillac XLR-V Owner's Manual - Page 380

Tire Inspection and Rotation We recommend that you regularly inspect your vehicle's tires for signs of wear or damage. See When It Is Time for New Tires on page 6-61 for additional information. If your vehicle has P235/50R18 size tires they should be rotated any time you notice unusual wear. Rotate the tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 6-61 and Wheel Replacement on page 6-66. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Tire and Loading Information label, see Inflation - Tire Pressure on page 6-54 and Loading the Vehicle on page 5-21. Vehicles that have the Tire Pressure Monitor System (TPMS) need the TPMS sensors reset after a tire rotation is performed. A special tool is needed to reset the sensor identification codes. See your dealer/retailer for service. Make certain that all wheel nuts are properly tightened. See Wheel Replacement on page 6-66 and "Wheel Nut Torque" under Capacities and Specifications on page 6-90. { CAUTION: Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after a time. The wheel could come off and cause a crash. When you change a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if you need to, to get all the rust or dirt off. When rotating P235/50R18 size tires, always use the correct rotation pattern shown here. 6-60