Brake Rotors and Drums

No, brake rotors and drums are not the same thing. Although both brake rotors and drums are an essential component of the vehicle's braking system, they function differently.

Brake rotors are round flat discs that are attached to the wheel hub and rotate with the wheel. When you step on the brake pedal, the caliper squeezes the brake pads against the rotor, which causes friction and slows down or stops the vehicle.

Brake drums are shaped like shallow drums. They are found on the rear wheels of some vehicles. When you step on the brake pedal, the brake shoes push out against the inner surface of the drum, creating friction and slowing down or stopping the vehicle.

While both brake rotors and drums serve the same purpose of stopping the vehicle, they differ in their design, function and location on the vehicle. It's essential to note that not all vehicles have both brake rotors and drums. Some have only rotors or drums depending on the vehicle make and model.

Read Understanding Your Brake System for more information.

If your brake drums or rotors are bad, it can lead to poor braking performance, increased stopping distance and other problems that can compromise your safety on the road. Here are some common signs to look out for that may indicate that your drums or rotors need replacement:

1. Vibration: If you feel a vibration in the brake pedal or steering wheel when you apply the brakes, it could be a sign that your brake rotors or drums are warped or damaged.

2. Squealing or Grinding: If you hear a high-pitched squeaking or grinding noise when you apply the brakes, it could be a sign that your brake pads are worn down or that your brake rotors or drums are damaged.

3. Longer Stopping Distance: If you notice that your vehicle is taking longer to stop than usual, it could be a sign that your brake drums or rotors are worn down and need to be replaced.

If you notice any of these signs, it's essential to inspect your vehicle's braking system as soon as possible. Are you a DIY enthusiast who wants to tackle the job yourself? Advance can help guide you through the steps and tell you what you will need before starting this project. Read How to Change Brake Pads for more.

Drums and rotors both serve the same purpose of stopping the vehicle when brakes are applied. However, there are some differences between them that may affect their performance depending on the vehicle and the driving conditions.

Drum brakes are generally cheaper to produce and are commonly found on the rear wheels of some older vehicles. Drum brakes have an advantage when it comes to incorporating a parking brake, as the parking brake mechanism can be integrated into the brake assembly. This allows for a simpler and more compact design compared to a disc brake setup, where a separate parking brake mechanism is needed.

Disc brakes, on the other hand, are generally more expensive to produce but are more efficient in stopping the vehicle, especially at high speeds. They are also easier to service and maintain than drum brakes, which typically require more work to adjust and replace.

The majority of vehicles today use front and rear disc brakes as they offer better stopping power. However, some vehicles do still use front disc and rear drum brakes.