Disc Brake Component Specifications

WARNING: This page is about a different car, the 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	Metric	English
Front Brakes
Rotor Diameter (16" Brake System)	300.0 mm	11.810 in
Rotor Diameter (17" Brake System)	321.0 mm	12.638 in
Rotor Diameter (18" Brake System)	345.0 mm	13.583 in
Rotor Thickness New (16" Brake System)	26.0 mm	1.023 in
Rotor Thickness New (17" Brake System)	28.0 mm	1.102 in
Rotor Thickness New (18" Brake System)	30.0 mm	1.181 in
Rotor Discard Thickness (16" Brake System)	23.0 mm	0.905 in
Rotor Discard Thickness (17" Brake System)	25.0 mm	0.984 in
Rotor Discard Thickness (18" Brake System)	27.0 mm	1.063 in
Rotor Minimum Allowable Thickness After Refinish (16" Brake System)	23.2 mm	0.913 in
Rotor Minimum Allowable Thickness After Refinish (17" Brake System)	25.2 mm	0.992 in
Rotor Minimum Allowable Thickness After Refinish (18" Brake System)	27.2 mm	1.071 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
Brake Pad Thickness (16" Brake System)	13.0 mm	0.512 in
Brake Pad Thickness (17" Brake System)	12.5 mm	0.492 in
Brake Pad Thickness (18" Brake System)	10.0 mm	0.393 in
Brake Pad Minimum Thickness (16" Brake System)	2.0 mm	0.078 in
Brake Pad Minimum Thickness (17" Brake System)	2.0 mm	0.078 in
Brake Pad Minimum Thickness (18" Brake System)	2.0 mm	0.078 in
Rear Brakes
Rotor Diameter (16" Brake System)	288.0 mm	11.339 in
Rotor Diameter (17" Brake System)	315.0 mm	12.402 in
Rotor Thickness New (16" Brake System)	12.0 mm	0.472 in
Rotor Thickness New (17" Brake System)	23.0 mm	0.906 in
Rotor Discard Thickness* (16" Brake System)	10.0 mm	0.393 in
Rotor Discard Thickness* (17" Brake System)	21.0 mm	0.827 in
Brake Pad Thickness (16" Brake System)	10.0 mm	0.393 in
Brake Pad Thickness (17" Brake System)	11.0 mm	0.433 in
Brake Pad Minimum Thickness (16" Brake System)	2.0 mm	0.078 in
Brake Pad Minimum Thickness (17" Brake System)	2.0 mm	0.078 in
Rotor Maximum Allowable Assembled Lateral Runout	0.05 mm	0.002 in
Rotor Maximum Allowable Thickness Variation	0.025 mm	0.001 in
Rotor Maximum Allowable Scoring	1.50 mm	0.059 in
Rotor Minimum Allowable Thickness After Refinish	10.2 mm	0.402 in
* All brake rotors have a minimum thickness dimension cast into them. Replace any rotor that is worn or machined below this specification.