GM Service Manual Online
For 1990-2009 cars only

Object Number: 156984  Size: SH

The compact spare uses a narrow 4-inch wide rim. The wheel diameter is usually one inch larger than the road wheels.

Do not use standard tires or snow tires on a compact spare wheel or damage to the vehicle may result.

Caution: To avoid serious personal injury, do not stand over tire when inflating. The bead may break when the bead snaps over the safety hump. Do not exceed 275 kPa (40 psi) pressure when inflating any tire if beads are not seated. If 275 kPa (40 psi) pressure will not seat the beads, deflate, relubricate the beads and reinflate. Overinflation may cause the bead to break and cause serious personal injury.

Periodically check the inflation pressure of the compact spare and maintain this pressure at 415 kPa (60 psi). Use the present tire changing equipment and procedures to mount and dismount the compact tire from its wheel. As with other tires, the beads should completely seat at 275 kPa (40 psi). You may then safely inflate the spare tire to 415 kPa (60 psi).