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.
2009 Jeep Commander 4WD V8-5.7LFACTORY OEM SERVICE PROCEDURE
Brake Rotor/Disc
Front Disc Brake Rotor Diameter 328 mm (12.91 in.)
Front Disc Brake Rotor Max. Runout 0.05 mm (0.002 in.)
Front Disc Brake Rotor Max. Thickness Variation 0.009 mm (0.00035 in.)
Front Disc Brake Rotor Min. Thickness 28.5 mm (1.122 in.)
Rear Disc Brake Rotor Diameter 320 mm (12.6 in.)
Rear Disc Brake Rotor Max. Runout 0.02 mm (0.00079 in.)
Rear Disc Brake Rotor Max. Thickness Variation 0.009 mm (0.00035 in.)
Rear Disc Brake Rotor Min. Thickness 12.5 mm (0.492 in.)
Rear Disc Brake Rotor Drum Max. Diameter 206.5 mm (8.13 in.)
Front Disc Brake Rotor Max. Runout 0.05 mm (0.002 in.)
Front Disc Brake Rotor Max. Thickness Variation 0.009 mm (0.00035 in.)
Front Disc Brake Rotor Min. Thickness 28.5 mm (1.122 in.)
Rear Disc Brake Rotor Diameter 320 mm (12.6 in.)
Rear Disc Brake Rotor Max. Runout 0.02 mm (0.00079 in.)
Rear Disc Brake Rotor Max. Thickness Variation 0.009 mm (0.00035 in.)
Rear Disc Brake Rotor Min. Thickness 12.5 mm (0.492 in.)
Rear Disc Brake Rotor Drum Max. Diameter 206.5 mm (8.13 in.)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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