How Brakes Work

All drivers know that putting your foot on the brake slows the vehicle down. However many don't know exactly how it works.

It all starts with the pedal. The force put on the pedal is multiplied through leverage which then in turn initates a hydraulic system. Hydraulic systems run on incompressible fluids, in this instance brake fluid. The leverages force at one end pushes a piston into a brake cable, which pushes the fluid through the brake cable and pushes a piston out the other end, applying the friction to a wheel through a braking system (of which there are various types, see Braking Systems for more info). This friction is relayed through the tyres to the ground and the vehicle comes to a stop.

Over time, brakes can fail due to several reasons. A leak of fluid in the hydraulics will cause weak or failed brakes (please read our Brake Fluid section for more information). Additionally over time periods dependant on frequency and intensity of friction applied to the braking system will wear and component parts will need to be monitored, serviced or replaced. Good driving ethics and careful cautious driving can prolong brake life. Other factors can also cause wear to your braking system. More on brake wear and the different types can be seen on Brake Disc Condition Check page.