GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Brake Rotor Diameter

259.0 mm

10.197 in

Brake Rotor Discard Thickness*

18.70 mm

0.736 in

Brake Rotor Maximum Allowable Assembled Lateral Runout

0.06 mm

0.002 in

Brake Rotor Maximum Allowable Scoring

1.50 mm

0.059 in

Brake Rotor Maximum Allowable Thickness Variation

0.025 mm

0.001 in

Brake Rotor Minimum Allowable Thickness after Refinish

18.776 mm

0.739 in

Brake Rotor Thickness - New**

20.48 mm - 20.22 mm

0.806 in - 0.796 in

*All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specification.

**New rotors could range to 19.96 mm (0.786 in) due to thickness tolerances.