The actuation of the brake pedal is converted into hydraulic pressure by the master brake cylinder. This pressure is transferred by the brake fluid to the brake piston(s) in the brake calliper. The brake piston is set in motion and the brake pads rub against the brake disc - the vehicle is now slowed down. The heat energy generated is stored by the brake disc and released again as quickly as possible. The high frictional resistance and the enormous heat lead to wear and make it necessary to change the brake pads regularly. The wear of the front brake pads is usually higher than on the rear ones. In many smaller vehicles, brake drums are installed on the rear axle in combination with brake shoes.
brake pads generally consist of the following components:
The damping plate prevents squeaking. The composition of the friction material also varies from manufacturer to manufacturer and depends on the requirements of the vehicle. The material consists of various metals and fillers, some with more than 10 components, and is approx. 15-30 millimeters thick.
Brake pads such as the ATE Ceramic or Textar ePad must not be confused with the ceramic composite discs used in motor sports or expensive luxury cars. The pad mixtures of ceramic pads contain special friction agents, fibres, binders and fillers. In order to keep a better overview, the different brake pads are classified into friction agent categories:
At high thermal loads, metallic brake pad sets exhibit excellent braking behaviour and are relatively inexpensive and durable. Experience shows that organic brake pads are somewhat softer, therefore they are also particularly quiet and therefore very comfortable. Ceramic brake pads are somewhat more expensive in terms of price, but also contribute to a significantly longer service life of the brake discs when the components are used under normal driving conditions. Ceramic pads are also softer than metal brake pads and have constant friction values. In addition, salt corrosion in winter is excluded. You can find out which pads are suitable for your vehicle in your vehicle documents.
The brake pad change depends on the vehicle and the driving style. Many brake pads have a warning contact, which is also called brake pad wear indicator, warning contact cable or wear warning contact. This indicator provides information via the warning light in the car or via an acoustic signal if the brake pad sets should be replaced. The general rule is that brake pads must not be less than 4 millimetres thick. For some vehicles we offer the brake pad wear indicator directly together with the brake pads, as they are usually replaced together.
The entire brake system should always be checked at every inspection. After changing the brake pads, it is necessary to brake the pads moderately in the first time, to adapt the pads to the brake disc. Extreme braking should be avoided during the first 300 km if possible, emergency braking is of course excluded.
With us you will find exclusively brake pad sets in OEM quality from well-known leading manufacturers such as Zimmermann, Brembo, Textar, ATE, Delphi, Ferodo, Hella Pagid, Herth+Buss, Jurid or TRW. If you are not sure which brake pads you need for your vehicle, please contact our customer service with the 17-digit chassis number. For VAG Group vehicles, the PR numbers also help us. You will find these in the vehicle service booklet or on a sticker in the boot.