Disc Brake Component Specifications. Chevrolet Corvette 2009

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2009 🢒 Corvette 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Disc Brake Component Specifications

Disc Brake Component Specifications JL9, J55, J56

Application	Specification
Application	Metric	English
Front Brakes
Rotor Discard Thickness	30.3 mm	1.19 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 Minimum Allowable Thickness After Refinish	30.6 mm	1.205 in
Rotor Thickness - New	32 mm	1.26 in
Rear Brakes
Rotor Discard Thickness	24.5 mm	0.965 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 Minimum Allowable Thickness After Refinish	24.9 mm	0.980 in
Rotor Thickness - New	26 mm	1.02 in

Disc Brake Component Specifications J57

Application	Specification
Application	Metric	English
Front Brakes
Rotor Discard Thickness	35.5 mm	1.40 in
Rotor Discard Weight*	Indicated on Carrier Section of Rotor
Rotor Maximum Allowable Assembled Lateral Runout	0.08 mm	0.003 in
Rotor Maximum Allowable Scoring	0.00 mm	0.00 in
Rotor Maximum Allowable Thickness Variation	0.02 mm	0.0008 in
Rotor Thickness - New	36 mm	1.42 in
Rear Brakes
Rotor Discard Thickness	33.5 mm	1.32 in
Rotor Discard Weight*	Indicated on Carrier Section of Rotor
Rotor Maximum Allowable Assembled Lateral Runout	0.08 mm	0.003 in
Rotor Maximum Allowable Scoring	0.00 mm	0.00 in
Rotor Maximum Allowable Thickness Variation	0.02 mm	0.0008 in
Rotor Thickness - New	34 mm	1.34 in
*Each brake rotor is marked with a unique discard weight. This weight is indicated on the carrier section of the brake rotor, and can vary for each rotor in an axle set.