Pinpoint Test A: Inner 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 out
Incorrect wheel and tire rotation

PINPOINT TEST A: INNER EDGE/SHOULDER WEAR

A1 MEASURE THE TREAD DEPTH
- Using a tread depth gauge or similar tool, measure the inside 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 in). 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.