1998 Buick Century Owner's Manual - Page 312

Exterior painted surfaces are subject to aging, weather and chemical fallout that can take their toll over a period of years. You can help tokeep the paint finish looking new by keeping your vehicle garaged or covered whenever possible. Cleaning Tires To clean your tires, use a stiff brush with a tirecleaner. Cleaning Aluminum Wheels Equipped) Keep your wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft clean towel. A wax may then be applied. The surface of these wheels is similar to the painted surface of your vehicle. Don't use strong soaps, chemicals, abrasive polishes, abrasive cleaners or abrasive cleaning brushes on them because you could damage the surface. Don't take your vehicle through an automatic carwash that has silicon carbide tirecleaning brushes. These brushes can also damage the surface of these wheels. NOTICE: When applying a tire dressing always take care to wipe off any overspray splash from all painted or surfaces on the body wheels of the vehicle. or Petroleum-based products may damage the paint finish. 6-52