Tires - Temporary Use Spares
Number 84-3-3 Date 11/83Subject: GENERAL MOTORS, TEMPORARY USE SPARES
Please discard previous bulletin 84-4-1. Bulletin published with incorrect section number.
The purpose of this bulletin is to clarify General Motors' current usage of temporary spares on passenger cars (1983-1984 models).
All GM cars are equipped with one of two types of temporary spares as standard equipment:
1. The stowaway (folding) spare is used only in "F" cars (Camaros and Firebirds) with limited slip differentials. This is because these vehicles require spares which, when properly inflated, are the same diameter as the road tires. To provide proper stowage for such a "large" spare, the stowaway spare must be used..
The stowaway spare is serviced as an assembly and is available only through Goodyear; ask for their Product Code 816-770-152. It requires a refillable C02 inflator, which is provided from the factory, and is available through WDDGM (part number 9590678).
2. The compact (high pressure) spare is used on all other GM cars. It remains inflated and is designed to operate at 60 psi. This spare is usually smaller in diameter than the road tires, yet the wheel is usually one inch larger in diameter than the road wheels.
The compact spare is serviceable using conventional equipment and procedures. The tire is available through Firestone, General, Goodyear, Goodrich, and Uniroyal. The wheel is available through WDDGM. The wheels are compatible with compact spare tires only.
When properly inflated and installed, both spares will provide satisfactory service until the road tire can be conveniently replaced.
Make sure that the proper spare is installed in the vehicle.
Tire size and pressure for both spare tires and road tires can be found on the tire placard located on the driver's door edge.
The highlights of each spare are summarized below:
STOWAWAY SPARE COMPACT SPARE
(FOLDING) (HIGH PRESSURE)
^ Usage Camaro, Firebird with limited slip All others
^ Requires Inflator Yes (Part Number 9590678) No
^ Serviceable No Yes
^ Inflation Pressure Same as road tires 60 psi
^ Supplied By Goodyear Firestone, General, (Product Code 816-770-152) Goodyear, Uniroyal
Goodrich