Disc Brake Component Specifications (JE5, JL9)

WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	Metric	English
Front Brake Pads
Taper	0.15 mm	0.006 in
Front Brake Rotor JE5
Rotor Diameter	323.0 mm	12.71 in
Rotor Minimum Thickness*	30.7 mm	1.209 in
Rotor Maximum Allowable Assembled Lateral Runout	0.06 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)	32.20 mm	1.267 in
Front Brake Rotor JL9
Rotor Diameter	303.0 mm	11.929 in
Rotor Minimum Thickness*	30.7 mm	1.209 in
Rotor Maximum Allowable Assembled Lateral Runout	0.06 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)	32.20 mm	1.267 in
Rear Brake Pads
Taper	0.15 mm	0.006 in
Rear Brake Rotor JE5
Rotor Diameter	320.0 mm	12.598 in
Rotor Minimum Thickness*	24.0 mm	0.944 in
Rotor Maximum Allowable Assembled Lateral Runout	0.06 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	26.0 mm	1.023 in
Rear Brake Rotor JL9
Rotor Diameter	298.0 mm	11.732 in
Rotor Minimum Thickness*	24.0 mm	0.944 in
Rotor Maximum Allowable Assembled Lateral Runout	0.06 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	26.0 mm	1.023 in
* All brake rotors have a minimum thickness dimension cast into them. Replace any rotor that is worn or machined below this specification.