Brake Disk Thickness Check

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Using a micrometer, measure disk thickness at eight positions, approximately 45 degrees apart and 10 mm (0.4 inch) in from the outer edge of the disk.
Standard value:

32.0 mm (1.26 inch) <Front>

22.0 mm (0.87 inch) <Rear>

Limit:

30.0 mm (1.18 inch) <Front>

20.0 mm (0.79 inch) <Rear>

NOTE: Thickness variation (at least 8 positions) should not be more than 0.015 mm (0.0006 inch).

Fig 1: Measuring Disc Thickness (Front)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.