GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

JF9

  • Rotor Discard Thickness*

34.7 mm

1.366 in

  • Rotor Minimum Allowable Thickness After Refinish

35.1 mm

1.382 in

  • Rotor Thickness-new

36.26-36.64 mm

1.428-1.443 in

  • Rotor Maximum Allowable Lateral Runout

0.05 mm

0.002 in

  • Rotor Maximum Allowable Scoring

1.5 mm

0.059 in

  • Rotor Maximum Allowable Thickness Variation

0.025 mm

0.001 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 specifications.