Disc Brake Component Specifications

WARNING: This page is about a different car, the 2007 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	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.