Camaro V8-305 5.0L VIN F FI (1985)
Number:
87-35
Section:
3A
Date:
DEC., 1986
Subject:
UNEVEN WEAR-OUTER RIBS ON CAMARO FRONT TIRES
Model and Year:
1982-87 CAMARO
TO:
ALL CHEVROLET DEALERS
Some 1982-87 Camaros 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. The sum toe should be set to .10 degrees +/- .20 degrees.
The sum toe specification was changed from .30 degrees, +/- .20 degrees, to .10 degrees +/- .20 degrees for both factory and service settings starting with
the VIN breakpoints below:
PLANT
VIN
Van Nuys
HL113111
Norwood
HN124400
Use applicable Labor Operation Number and Time.
Technical Service Bulletin # 8613
Date: 851201
Tires, Front - Premature Wear on RWD Vehicles
86-13
3
DEC., 1985
Subject:
FRONT POSITION TIRE WEAR ON REAR WHEEL DRIVE VEHICLES, AND ALL WEATHER TIRES
Model and Year:
ALL REAR WHEEL DRIVE VEHICLES PASSENGER CARS AND LIGHT DUTY TRUCKS
TO:
ALL CHEVROLET DEALERS
Some rear wheel drive vehicles may exhibit premature tire wear on the front wheel positions. The wear usually starts on the outer tread row and may
progress across the full tread. This wear also usually appears as a heel and toe (high and low) wear pattern on individual tread blocks which can
eventually lead to tire noise and/or tire roughness.
Rear Wheel Drive
Small amounts of heel/toe wear on the outer tread is considered normal. This wear is characteristic of new tires at full tread depth on free-rolling axles.
Turning and cornering exaggerates front tire wear. Routine tire rotation at 7,500 miles using the modified 'X' method* as shown in the Owners Manual