Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2007IMPALA V6-3.9LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLDISC BRAKE SYSTEMBRAKE ROTOR/DISCSPECIFICATIONS
2007 Chevrolet Impala V6-3.9L
Brake Rotor/Disc: Specifications
2007 Chevrolet Impala V6-3.9LSECTION Specifications
Front Brakes
Rotor Discard Thickness 28.6 mm (1.126 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 Thickness Variation 0.025 mm (0.001 in)
Rotor Minimum Allowable Thickness after Refinishing 29.0 mm (1.142 in)
Rotor Thickness - New 30 mm (1.181 in)
Rear Brake Rotors
Rotor Discard Thickness* 9.0 mm (0.354 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 Refinishing 9.35 mm (0.368 in)
Rotor Thickness - New 11.0 mm (0.433 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 specification.
Rotor Discard Thickness 28.6 mm (1.126 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 Thickness Variation 0.025 mm (0.001 in)
Rotor Minimum Allowable Thickness after Refinishing 29.0 mm (1.142 in)
Rotor Thickness - New 30 mm (1.181 in)
Rear Brake Rotors
Rotor Discard Thickness* 9.0 mm (0.354 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 Refinishing 9.35 mm (0.368 in)
Rotor Thickness - New 11.0 mm (0.433 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 specification.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.