Brake Disc Thickness Check

WARNING: This page is about a different variant/trim than selected.

Remove contaminants or corrosion from the brake disc surface.
Use a micrometer to measure the brake disc thickness at minimum eight points which are 10 mm (0.39 inch) inward from its circumference.
Standard value:

26.0 mm (1.02 inches) < Front (Except RALLIART) >

24.0 mm (0.94 inch) < Front (RALLIART) >

10.0 mm (0.39 inch) < Rear >

Limit:

24.4 mm (0.96 inch) < Front (Except RALLIART) >

22.4 mm (0.88 inch) < Front (RALLIART) >

8.4 mm (0.33 inch) < Rear >

Fig 1: Measuring Brake Disc Thickness Using Micrometer
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
If the brake disc thickness is worn beyond the limit value at more than one point, replace the brake disc and check its run-out.