Signs of Bad Brake Rotors

Brake rotors are integral parts of the braking system on your car. Brake pads grab the rotors, squeezing the rotating disc to slow down the vehicle. Over time, imperfections in the brake pads or the accumulation of dirt particles can wear down brake rotors by the constant heat and friction generated every time you press the brake pedal. As the rotor surface thins, the effectiveness of braking ability decreases to dangerous levels.

Significance

Bad brake rotors cause a wide range of problems that affect your car's entire braking system. Worn rotors can cause overheating, which translates to ineffective braking and can cause brake system failure.

Identification

Brake rotors warp from overheating and from the constant grinding of worn brake pads against the once-smooth rotor surface. Bad brake rotors may make the car shake or vibrate when you apply the brake.

Features

If you can feel vibrations in the steering wheel or brake pedal when applying the brakes, bad brake rotors may be the cause.

Functon

Brake rotors work in conjunction with bake pads as the final step in the braking process of a car. When the brake pedal is pressed, this forces brake fluid through a master cylinder to the brake lines. The fluid heats under pressure, triggering heat transfer that cause compression of the brake pads against the rotor.

Warning

Brake rotors should be measured to gauge the appropriate level of thickness. Worn brake pads can warp and score the rotor, causing the surface to thin to dangerous levels that cannot adequately absorb and transfer heat.