A car brake pad is a replaceable friction pad that is mounted to a brake caliper and presses against a brake rotor to stop the car’s wheels from rotating. Brake pads play a crucial role in the braking system, converting the energy from the brake pedal into friction to slow down or stop the vehicle. Over time, brake pads wear down and must be replaced to maintain the effectiveness of the braking system. Brake pads are available in different materials, including ceramic, semi-metallic, and organic, and the choice of material depends on the driver’s needs and driving style.