Catera V6-3.0L VIN R (1997)
Alignment: By Symptom
Alignment/Tires - Vehicle Drift/Abnormal Tire Wear
File In Section: 3 - Steering/Suspension
Bulletin No.: 81-31-02
Date: July, 1998
Subject:
Vehicle Drifts/Leads to the Right and/or Front Tire Inner Shoulder Wear (Rotate/Replace Tires, Reset Alignment)
Models:
1997-98 Cadillac Catera - Built Prior to VIN 195189
Condition
Some owners may comment that their vehicle exhibits a drift or lead to the right condition and/or a front tire inner shoulder wear condition.
Cause
The drift/lead right condition may be due to the front end alignment setting and/or the tires. The front tire inner shoulder wear condition may be due to
the front end alignment setting.
Correction
The following procedure should be used to address one or both of these conditions. The following wheel alignment specifications are released for
Service only; production alignment specifications may vary. The alignment should be made with the vehicle at curb weight (full tank of gas and no
additional weight in car). These revised alignment specifications, which increase positive toe-in (introduced into production at VIN breakpoint
WR021457) and decrease negative camber (introduced into production at VIN breakpoint WR195189), are intended to improve front tire inner shoulder
wear.
A new tire (introduced into production at VIN breakpoint WR183651) is available through Goodyear. This new tire has the tread pattern reversed to
eliminate a drift/lead right condition. Use only the alignment specifications in chart "A" with these new tires. Do not use the biased camber specifications
from chart "B" with these new tires.
I.
Inner Shoulder Wear on Front Tires Only (No Drift/Lead Right Condition)