Brake discs, found as part of the braking system on passenger cars and commercial vehicles, are critical components responsible for generating friction when contacted by brake pads to slow or stop wheel rotation. Located within the wheel assembly, these steel or composite discs work with brake calipers to provide the necessary stopping power. Disc condition directly affects braking performance and safety; wear, scoring, or warping necessitate replacement. Key characteristics include diameter, thickness, ventilation style (solid, vented, drilled/slotted), and hub bore size to ensure compatibility. Examples in our Service Parts > Major Service > Brake Disc category include offerings from Febi, such as MPN FEBI33402 and FEBI33410, as well as original equipment discs for Volkswagen and BMW vehicles.