Backing plates are often referred to as ‘brake plates’ and can be found behind the brake shoes.
Backing plates are metal plates that function as the solid foundation for drum brake hardware and the brake shoes.
Most modern vehicles are equipped with brake discs. This braking system is one in which the wheels are connected to metal discs which spin in time with the tyres and wheel hubs.
The calliper works by slowing down the wheels as it creates friction with rotors. It is essentially a type of clamp which fits around the disc