Disc Brake Component Specifications

WARNING: This page is about a different car, the 2014 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	Metric	English
Front Brake Rotor JL9
Rotor Diameter	321.0 mm	12.6 in
Rotor Discard Thickness*	27.0 mm	1.06 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
Rotor Thickness - New	30.0 mm	1.18 in
Front Brake Rotor J55
Rotor Diameter	345.0 mm	13.5 in
Rotor Discard Thickness*	27.0 mm	1.06 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	30.0 mm	1.18 in
Rear Brake Rotor JL9
Rotor Diameter	339.0 mm	13.3 in
Rotor Discard Thickness*	24.0 mm	0.94 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	1.02 in
Rear Brake Rotor J55
Rotor Diameter	339.0 mm	13.3 in
Rotor Discard Thickness*	24.0 mm	0.94 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	1.02 in
*All disc brake rotors have a minimum thickness dimension cast into them. Replace any rotor that does not meet the minimum thickness dimension.