Brake pads are friction surfaces actuated by caliper pistons to create braking force against a vehicle’s rotors. Positioned within the brake caliper assembly at each wheel, they convert kinetic energy into thermal energy through repeated contact. Pad composition varies – typically ceramic, organic, or metallic – influencing friction coefficient, wear rate, and noise characteristics. Backing plates provide structural support and mounting features, while friction material thickness dictates service life. Effective braking relies on consistent pad-to-rotor contact and appropriate material selection for vehicle weight and usage.