2019 sierra x31 rotors

[Darrell 59]

Does anyone have the min thickness for the brake rotors?

[newdude]

1 hour ago, Darrell 59 said:

Does anyone have the min thickness for the brake rotors?

 

Standard 4 piston brakes (w/o optional 6 piston):

 

Front Brakes

Rotor Discard Thickness - 28.0 mm/1.102 in

 

Rotor Minimum Allowable Thickness After Refinish - 28.5 mm/1.122 in

 

Rotor Thickness (NEW) - 30.0 mm/1.181 in

 

Rotor Maximum Allowable Assembled Lateral Runout - 0.05 mm/0.002 in

 

Rotor Maximum Allowable Scoring - 1.50 mm/0.059 in

 

Rotor Maximum Allowable Thickness Variation - 0.006 mm/0.00024 in

 

Rear Brakes

Rotor Discard Thickness - 18 mm/0.709 in

 

Rotor Minimum Allowable Thickness After Refinish18.5 mm0.728 in

 

Rotor Thickness (NEW) - 20.0 mm/0.787in

 

Rotor Maximum Allowable Assembled Lateral Runout - 0.05 mm/0.002 in

 

Rotor Maximum Allowable Scoring - 1.50 mm/0.059 in

 

Rotor Maximum Allowable Thickness Variation - 0.006 mm/0.00024 in

 

 

6 piston accessory big brake kit (option code 5JL if ordered as LPO) :

 

Front Brakes - 5JL

Rotor Discard Thickness - 30.0 mm/1.181 in

 

Rotor Minimum Allowable Thickness After Refinish - 30.5 mm/1.201 in

 

Rotor Thickness (new) - 32.0 mm/1.259 in

 

Rotor Maximum Allowable Assembled Lateral Runout - 0.05 mm/0.002 in

 

Rotor Maximum Allowable Scoring - 1.50 mm/0.059 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 minimum thickness specifications.

Rotor Maximum Allowable Thickness Variation - 0.018 mm/0.0007 in