A brake rotor is a crucial component of a vehicle's braking system. It is a flat, disc-shaped metal part that rotates with the wheels. When the driver presses the brake pedal, the brake pads clamp down on the rotor, creating friction that slows down or stops the vehicle. Brake rotors come in various types, including vented and slotted designs, which help dissipate heat and improve performance. Regular maintenance of the rotors is essential, as worn or damaged rotors can lead to decreased braking efficiency and safety issues. Properly functioning rotors are vital for the overall performance of the vehicle's braking system.