Wheels and Tires: Description and Operation

Several types of wheel assemblies are available: stamped steel forged aluminum and cast aluminum.

Tire, Temporary Spare

CAUTION: Do not attempt to mount a high-pressure spare fire on a regular wheel. The high-pressure spare tire is only to be mounted on a high-pressure wheel. Limited service skin spare tires are used with standard stamped steel wheels.

NOTE: Extended use of other than matching size spare tires on a Traction-Lok rear axle could result in a permanent reduction in effectiveness. This loss of effectiveness may be noticeable to the driver as backlash and noise increase with worn clutch plates

The temporary spare tire is designed to provide a lightweight, easy to use spare tire. It is for emergency use only and has a maximum speed capability of 80 km/h (50 mph).

Tire and Wheel Runout
Excessive radial and lateral runout of a wheel and tire assembly can cause roughness vibration wheel tramp tire wear and steering wheel tremor.
Before checking runout, and to avoid false readings caused by temporary flat spots in the tires, check runout only after the vehicle has been driven far enough to warm the tires.