1993 Oldsmobile Silhouette Owner's Manual - Page 214

Problems on the Road Compact Spare Tire Although the compact spare was fully inflated when your vehicle was new, it can lose air after a time.Check the inflation pressure regularly. It should be 60 psi (420 P a ) . The compact spare is made to go up 3,000 miles (5 000 km), to so you can finish your trip and have your full-sizetire repaired or replaced where you want. Of course, it's best to replace yourspare with a full-size as tire soon as you can. Your spare will last longer andbe in good shape in case you need it again. Your anti-lock brake system warning light may come on when are driving you with a compact spare. See Index the under Anti-Lock Brake System Warning Light. Don'tyour take compact spare through an automatic car wash with guide rails.The compact spare can get caughton the rails. That can damage the tire and wheel, and maybe other parts of your vehicle. Don't use your compactspare on some other vehicle. And don't mix your compactspare or wheel with other wheels or tires. They won't fit. Keep your spare and its wheel together.