2007 Cadillac STS Owner's Manual - Page 438

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause interference. 2. This device must accept any interference received, including interference that may cause undesired operation of the device. Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment. Different tire sizes should not be rotated front to rear. Each tire and wheel should only be used in the original front or rear position it is in. Tire rotation is recommended if your vehicle is equipped with P235/50R17 size tires on all four wheel positions or 255/45ZR18 size tires on all four wheel positions. These tires should be rotated every 5,000 to 8,000 miles (8 000 to 13 000 km) Any time you notice unusual wear, rotate your 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 440 and Wheel Replacement on page 445 for more information. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See Scheduled Maintenance on page 505. Tire Inspection and Rotation Tire rotation is not recommended if your vehicle has the following performance tire combinations: • P235/50R17 size tires on the front wheels and P255/45R17 size tires on the rear wheels. • P235/50R18 size tires on the front wheels and P255/45R18 size tires on the rear wheels. • P255/45R18 size tires on the front wheels and P275/40R19 size tires on the rear wheels. 438