Disc Brake Component Specifications

WARNING: This page is about a different car, the 2021 Chevrolet Tahoe and 2021 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

Application	Specification
Application	Metric	English
Disc Brake Pads - Front and Rear
Maximum Allowable Taper	0.15 mm	0.0059 in
Minimum Friction Material Thickness	2.0 mm	0.787 in
Front Brake Rotor (J55)
Diameter	410.0 mm	16.142 in
Discard Thickness*	30.0 mm	1.181 in
Minimum Allowable Thickness After Refinish	30.5 mm	1.201 in
Thickness (NEW)	32.0 mm	1.269 in
Maximum Allowable Assembled Lateral Runout	0.05 mm	0.002 in
Maximum Allowable Scoring	1.50 mm	0.59 in
Maximum Allowable Thickness Variation	.025 mm	0.001 in
Front Brake Rotor (J61)
Diameter	343.0 mm	13.504 in
Discard Thickness*	28.0 mm	1.102 in
Minimum Allowable Thickness After Refinish	28.5 mm	1.122 in
Thickness (NEW)	30.0 mm	1.181 in
Maximum Allowable Assembled Lateral Runout	0.05 mm	0.002 in
Maximum Allowable Scoring	1.50 mm	0.59 in
Maximum Allowable Thickness Variation	.025 mm	0.001 in
Rear Brake Rotor
Diameter	345.0 mm	13.583 in
Discard Thickness*	18.0 mm	0.709 in
Minimum Allowable Thickness After Refinish	18.5 mm	0.728 in
Thickness (NEW)	20.0 mm	0.787 in
Maximum Allowable Assembled Lateral Runout	0.05 mm	0.002 in
Maximum Allowable Scoring	1.50 mm	0.59 in
Maximum Allowable Thickness Variation	.025 mm	0.001 in
*All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the discard thickness specification.