Tires - Uneven Outer Edge Wear
Number 87-3-7 Date 12/86Subject: UNEVEN WEAR-OUTER RIBS ON FRONT TIRES
1982-87 FIREBIRD
Some 1982-87 Firebirds may experience uneven tire wear on the outer ribs of the front tires.
To eliminate or minimize this condition check the sum toe setting on an alignment machine and reset the sum toe to .10 +/- .20 degrees.
The sum toe specification was changed from .3 degrees +/- .20 degrees to .10 +/- .20 for both factory and service settings starting with the VIN breakpoints below:
PLANT VIN
Van Nuys HL207675
Norwood HN215155
Use applicable Labor Operation Number and Time.