Brake Disc A4474210012 For Mercedes W447

The difference between the front and back of the automobile brake disc is mainly reflected in its design and use:

1. Design difference: The front and rear brake discs of automobiles are different in design. The front brake disc is usually larger and thicker, because the front wheel bears most of the braking force when braking the vehicle, and a larger brake disc is needed to provide sufficient braking force. The rear brake disc is relatively small, because the rear wheel bears less braking force when braking, and the size of the brake disc is correspondingly small.

2. Difference of braking mode: The front brake disc is usually composed of brake calipers and brake pads, and braking is realized by clamping the brake disc with calipers. The rear brake disc is usually a parking brake disc, which is used to fix the position of the vehicle when parking, and is usually controlled by a hand brake or an electronic parking system.

3. Difference of braking effect: The front brake disc bears more braking force when the vehicle is braked, so the braking effect is more obvious and it can slow down or stop faster. Then the brake disc is mainly used for auxiliary braking and parking, and the braking effect is relatively weak.

4. Difference of wear degree: Because the front wheel bears the main braking force when braking the vehicle, the wear speed of the front brake disc is usually faster than that of the rear brake disc. Therefore, the inspection and maintenance of the front brake disc is more important, and it needs to be inspected and replaced regularly to ensure the braking effect and safety.

Generally speaking, there are some differences in the design, use mode, braking effect and wear degree of automobile brake discs before and after. Understanding and paying attention to these differences is helpful to correctly maintain and maintain the braking system of vehicles and ensure the driving safety and reliability of vehicles.