For 1990-2009 cars

1. Use a tire changing machine in order to mount or dismount tires. Follow the equipment manufacturer's instructions. Do not use hand tools or tire irons in order to change tires because these tools may damage the tire bead or the wheel rim.
2. Clean the rim bead seats with a wire brush or coarse steel wool to remove the following items:

• | Lubricants

• | Old rubber

• | Light rust

3. Lubricate the bead area with an approved tire lubricant such as GM P/N 9985555 (50 percent lubricant/50 percent water) before mounting or dismounting a tire.
4. Mount the tire.

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.

5. Inflate the tire until the beads are seated. Do not exceed 275 kPa (40 psi) in order to seat the beads.
6. Install the valve core and adjust to the proper pressure.
7. Inspect the locating rings of the tire in order to be sure the tire shows around the rim flanges on both sides.