Pinpoint Test B: Outer Edge/Shoulder Wear

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

Excessive toe in
Incorrect wheel and tire rotation

PINPOINT TEST B: OUTER EDGE/SHOULDER WEAR

B1 MEASURE THE TREAD DEPTH
- Using a tread depth gauge or similar tool, measure the outside edge/shoulder tread depth.
- Is the tread depth greater than 1.58 mm (0.062 in)?
1. YES : ROTATE the wheel and tire assemblies.
  CHECK and ADJUST the toe to nominal -0.15 degrees (toe out). CHECK and ADJUST caster and camber to nominal. REFER to SUSPENSION SYSTEM - GENERAL INFORMATION article.
2. NO : INSTALL a new tire(s). CHECK and ADJUST the toe to nominal. CHECK and ADJUST caster and camber to nominal. REFER to SUSPENSION SYSTEM - GENERAL INFORMATION article.