Alignment - Specifications & Importance of Tire Rotation
88pontiac02Bulletin Number: 88-3-14
Reference Number: 833502
Publish Date: 3/88
Subject: WHEEL ALIGNMENT SPECIFICATIONS
Models
Atfected: 1988 FIREBIRD
In order to address tire wear on 1987-88 Firebirds, the front alignment specifications have been changed. The new alignment specifications at "Curb" trim are as follows:
Front TOTAL Toe 0 degrees +/- 0.2 degrees
Front Camber 0.3 degrees +/- 0.5 degrees
Front Caster 4.7 degrees +/- 0.5 degrees
Cross Camber (L-R) 0 degrees +/- 0.7 degrees
Cross Caster (L-R) 0 degrees +/- 0.7 degrees
- Vehicle must be jounced three times (down only) before checking alignment, to eliminate false geometry readings..
- Front toe adjustment (0 degrees plus or minus 0.1 degrees) to be set separately per wheel, with steering wheel held in "straight ahead" position within plus or minus 3.5 degrees.
TIRE ROTATION
IMPORTANT ON ALL VEHICLES - To further help minimize tire wear, stress the importance of regular tire rotation to the owner. The modified "X" pattern at 7,500 miles is recommended (See Illustration). Also, point out the importance of proper inflation pressure, as listed on the tire placard on the driver's door edge.
NOTICE: FIREBIRDS EQUIPPED WITH P245/50VR16 TIRES, MUST HAVE TIRES DISMOUNTED TO COMPLETE ROTATION. FRONT AND REAR WHEELS HAVE DIFFERENT OFFSETS AND TIRES ARE DIRECTIONAL.
DIRECTIONAL TIRES HAVE AN ARROW ON BOTH SIDES OF THE SIDEWALL POINTING IN THE DIRECTION THE TIRES MUST ROLL FOR THE PERFORMANCE. THERE IS NO "INSIDE" OR "OUTSIDE" TO THIS TIRE. WHEN TIRE ROTATION IS NEEDED FOLLOW THESE STEPS:
1. Dismount tires from the wheels.
2. Rotate the tires (not wheels) as shown in the rotation pattern illustration. Make sure the tires are rotating in the direction of the arrows.
3. Rebalance tires.
4. Replace wheels in their original position.