FixVault
Home › Pontiac › 2008 › Grand Prix Base › Repair and Diagnosis › Brakes › Mechanical - Hydraulic › Disc Brake System › Specifications › Disc Brake Component Specifications

Disc Brake Component Specifications

Application Specification
Metric English
Front Brake Rotors
  • Rotor Discard Thickness *

    (J65, JL9)

 30.7 mm 1.21 in
  • Rotor Discard Thickness *

    (Z7U)

 29.0 mm 1.14 in
  • Rotor Maximum Allowable Lateral Runout

    (J65, JL9)

 0.060 mm 0.002 in
  • Rotor Maximum Allowable Lateral Runout

    (Z7U)

 0.030 mm 0.0012 in
  • Rotor Maximum Scoring
 1.50 mm 0.059 in
Rotor Maximum Allowable Thickness Variation
  • J65, JL9
 0.025 mm 0.001 in
  • Z7U
 0.006 mm 0.00024 in
Rotor Minimum Allowable Thickness After Refinishing
  • J65, JL9
 31.0 mm 1.22 in
  • Z7U
 30.0 mm 1.18 in
Rotor Thickness-NEW
  • J65, JL9
 32.2 mm 1.27 in
  • Z7U
 32.0 mm 1.26 in
Rear Brake Rotors
  • Rotor Discard Thickness *

    (J65, JL9)

 12.5 mm 0.49 in
  • Rotor Discard Thickness *

    (Z7U)

 23.0 mm 0.91 in
Rotor Maximum Allowable Lateral Runout
  • J65, JL9
 0.05 mm 0.002 in
  • Z7U
 0.0305 mm 0.0012 in
  • Rotor Maximum Allowable Scoring
 1.50 mm 0.059 in
Rotor Maximum Allowable Thickness Variation
  • J65, JL9
 0.02 mm 0.001 in
  • Z7U
 0.006 mm 0.00024 in
Rotor Minimum Thickness After Refinishing
  • J65, JL9
 12.9 mm 0.51 in
  • Z7U
 24.0 mm 0.945 in
Rotor Thickness-NEW
  • J65, JL9
 14.00 mm 0.55 in
  • Z7U
 26.00 mm 1.024 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.
About FixVault