Wheels: Testing and Inspection

Notice: The use of non-GM original equipment wheels may cause:

^ Damage to the wheel bearing, the wheel fasteners and the wheel
^ Tire damage caused by the modified clearance to the adjacent vehicle components
^ Adverse vehicle steering stability caused by the modified scrub radius
^ Damage to the vehicle caused by the modified ground clearance
^ Speedometer and odometer inaccuracy

Important: Replacement wheels must be equivalent to the original equipment wheels in load capacity, diameter, rim width, offset and mounting configuration. A wheel of improper size or type may affect the wheel and bearing life, the brake cooling, the speedometer/odometer calibration, the vehicle ground clearance and the tire clearance to the body and the chassis.

Replace wheels under the following conditions:
^ The wheels are bent or dented
^ The wheels have excessive radial runout
^ The wheels leak air through the wheel welds
^ The wheels have elongated bolt holes
^ The wheel nuts do not stay tight
^ The wheels are very rusty

Wheels with excessive runnout may cause objectionable vibrations.
Steel wheels are identified by a two or three letter code stamped into the rim near the valve stem. Aluminum wheels have the code, part number, and manufacturer ID cast into their back side.