2008 Cadillac STS Owner's Manual - Page 424

3. Reinstall the compact spare tire (E) making sure to line up the wheel center hole with the bolt (G) and place on the compartment floor. 4. Insert the jack container (D) with wheel wrench and jack into the center of the compact spare tire making sure to line up the wheel nut hole with the bolt (G) on the compartment floor. 5. Secure the tire and wheel with the retainer (C) and wing nut (B). 6. Reinstall the compact spare tire cover (A). It's best to replace the spare with a full-size tire as soon as soon as possible. The spare will last longer and be in good shape if needed it again. If your vehicle has All Wheel Drive (AWD) it could also have an StabiliTrak® 3. See StabiliTrak® System on page 4-8 for more information. If the compact spare tire is installed on a vehicle with the StabiliTrak® 3 System, the vehicle operates in the Stability Secure Mode. The STABILITY SECURE MODE message displays on the Driver Information Center (DIC). See DIC Warnings and Messages on page 3-80 for more information. Notice: When the compact spare is installed, do not take your vehicle through an automatic car wash with guide rails. The compact spare can get caught on the rails. That can damage the tire and wheel, and maybe other parts of your vehicle. Do not use the compact spare on other vehicles. And do not mix the compact spare tire or wheel with other wheels or tires. They will not fit. Keep the spare tire and its wheel together. Notice: Tire chains will not fit your compact spare. Using them can damage your vehicle and can damage the chains too. Do not use tire chains on your compact spare. Compact Spare Tire Although the compact spare tire was fully inflated when the vehicle was new, it can lose air after a time. Check the inflation pressure regularly. It should be 60 psi (420 kPa). After installing the compact spare on the vehicle, you should stop as soon as possible and make sure the spare tire is correctly inflated. The compact spare is made to perform well at speeds up to 65 mph (105 km/h) for distances up to 3,000 miles (5 000 km). The tire inflation monitor system must be calibrated after installing or removing the compact spare. See Tire Pressure Monitor System on page 5-68. The system may not work correctly when the compact spare is installed on the vehicle. 5-106