It is the system mounted on the front and sometimes back axle too. As the name suggests, it slows down or stops the car.
The usual lifespan of a brake disc is about 50,000 to 70,000 kilometers. After this, or if you see signs of the worn-out brake disc, you need to get them replaced. One of the signs of a worn-out brake disc is the shaking of your car. It means your brake disc has suffered thermal damage due to severe braking or has become worn out. Another sign can be abnormal noises ranging from a squeak to loud scrapping.