Disc Brake Component Specifications

2008 Pontiac Grand Prix BaseSECTION Disc Brake Component Specifications
WARNING: This page is about a different car, the 2008 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Application Specification
Metric English
Front Brakes JH6
  • Rotor Discard Thickness
36.50 mm 1.437 in
  • Rotor Minimum Allowable Thickness After Refinish
37.0 mm 1.457 in
  • Rotor Thickness - New
38.0 mm 1.496 in
  • Rotor Maximum Allowable Assembled Lateral Runout
0.13 mm 0.005 in
  • Rotor Maximum Allowable Scoring
1.50 mm 0.059 in
  • Rotor Maximum Allowable Thickness Variation
0.025 mm 0.001 in
Rear Brakes JH6
  • Rotor Discard Thickness
27.50 mm 1.083 in
  • Rotor Minimum Allowable Thickness After Refinish
28.0 mm 1.102 in
  • Rotor Thickness - New
29.0 mm 1.142 in
  • Rotor Maximum Allowable Assembled Lateral Runout
0.13 mm 0.005 in
  • Rotor Maximum Allowable Scoring
1.50 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.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.