Disc Brake Component Specifications

WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

General Specifications

Application	Specification
Application	Metric	English
Front Brakes
Rotor Minimum Thickness *	27.5 mm	1.08 in
Rotor Thickness - New	29.0 mm	1.14 in
Rotor Maximum Allowable Lateral Runout	0.051 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
Rear Brakes
Rotor Minimum Thickness *	18.50 mm	0.728 in
Rotor Thickness - New	20.0 mm	0.787 in
Rotor Maximum Allowable Lateral Runout	0.051 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
* All brake rotors have a minimum thickness dimension cast into them. Replace any rotor that is worn or machined below this specification.