Your car’s brakes might be the most important safety feature. Every time you step on the brake pedal, it triggers an intricate process involving hydraulic pressure and friction to bring your vehicle to a stop. Obviously, your foot alone cannot provide enough force to bring a two-ton car to a stop.
There are two brake types. Some vehicles come equipped with both drum brakes and disc brakes. Today, most modern cars have at least two disc brakes. Usually the disc brakes are on the front wheels. Some have disc brakes on all four wheels. There is a tremendous amount of heat that is released by the friction from these disc brakes coming into contact with the wheel. To prevent overheating, most disc brakes are vented.