Why Do Brake Rotors Warp?

Warped brake rotors can be a costly problem.

While not common, brake rotor warpage can occur on any vehicle. If, and how fast, rotors warp depends on the conditions they are subjected too by the driver.

Rotors

Brake rotors come in various styles and composition, but most are made of steel alloy.

Heat

The No. 1 enemy of brake rotors is heat from braking. If this heat isn't released quickly enough, the metal in the rotors will begin to warp.

Causes

The two most common culprits found to create brake warpage are drivers who "ride" the brakes, or use the brakes unnecessarily, and overweight vehicles. Overweight vehicles can warp rotors simply by overwhelming the brakes' ability to easily stop the vehicle.

Repairs

Rotors can be machined to remove warpage, as long as the warpage isn't too great. Otherwise, they must be replaced.

Prevention

Avoid resting your foot on the brake pedal when you're driving and don't overload your vehicle.

References

• AA1car.com: Disc Brake Rotors: The Science Behind Their Design