The brake system is actually composed of two kinds of systems: hydraulics and friction materials. Here's what happens within these systems between the time your foot hits the brake pedal and your car stops.

Vehicle brake system operation begins with the driver and the application of the brake pedal. Brakes slow and stop a vehicle by transforming vehicle motion into heat energy. The amount of heat produced is proportional to the vehicle speed and driver foot pressure on the brake pedal. Fast vehicle speeds and quick stops produce more heat. The brake system is comprised of many sub-systems. Stopping a vehicle requires that all brake sub-systems work together. The first system that is activated during a stop is the Apply system.

Disc Brakes

• Disc brake rotors
• Disc brake pads
• Calipers
• Caliper hardware

Hydraulic System

• Master cylinder
• Brake fluid
• Brake hoses/lines
• Power booster

Drum Brakes

• Brake drums
• Brake shoes
• Wheel cylinders
• Return springs and hardware

Parking Brake

• Cables
• Adjustment