Disc Brake Component Specifications

WARNING: This page is about a different car, the 2012 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	Metric	English
Caliper Bore Diameter- Front	60.0 mm	2.36 in
Caliper Bore Diameter- Rear	40.0 mm	1.57 in
Front Brakes J60
Rotor Diameter	296.0 mm	11.65 in
Rotor Discard Thickness*	27.0 mm	1.07 in
Rotor Maximum Allowable Assembled Lateral Runout- Tire and Wheel Assembly On-Vehicle	0.05 mm	0.002 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rotor Thickness New	30.0 mm	1.18 in
Front Brakes J61
Rotor Diameter	321.0 mm	12.637 in
Rotor Discard Thickness*	27.0 mm	1.07 in
Rotor Maximum Allowable Assembled Lateral Runout- Tire and Wheel Assembly On-Vehicle	0.05 mm	0.002 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rotor Thickness New	30.0 mm	1.18 in
Rear Brakes J60
Rotor Diameter	292.0 mm	11.49 in
Rotor Discard Thickness*	10.5 mm	0.413 in
Rotor Maximum Allowable Assembled Lateral Runout- Tire and Wheel Assembly On-Vehicle	0.05 mm	0.002 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rotor Thickness New	12.0 mm	0.472 in
Rear Brakes J61
Rotor Diameter	315.0 mm	12.40 in
Rotor Discard Thickness*	21.0 mm	0.827 in
Rotor Maximum Allowable Assembled Lateral Runout- Tire and Wheel Assembly On-Vehicle	0.05 mm	0.002 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rotor Thickness New	23.0 mm	0.905 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.