What is a Brake Caliper?
A caliper is part of the disc brake system, the type most cars have in their front brakes.
The brake caliper houses your car’s brake pads and pistons. Its job is to slow the car’s wheels by creating friction with the brake rotors.
The brake caliper fits like a clamp on a wheel’s rotor to stop the wheel from turning when you step on the brakes. Inside each caliper is a pair of metal plates known as brake pads.
When you push the brake pedal, brake fluid creates pressure on pistons in the brake caliper, forcing the pads against the brake rotor and slowing your car.
How are Brake Calipers Connected to the rest of the Braking System?
The caliper assembly generally lives inside the wheel and is connected to the master cylinder through tubes, hoses, and valves that conduct brake fluid through the system. We could go on about brake calipers for days on end, but we’ll show some restraint. Here’s what you really need to know: your brake calipers are very important.
When to Replace Brake Calipers?
Over time in normal driving conditions, the heat generated from the braking system can weaken and break down seals inside the calipers.
They can become rusty, contaminated or dirty, and start to leak brake fluid if you don’t drive regularly.
However, you should have your brakes checked immediately if you experience any of the following:
- Your brakes are continuously squeaking, squealing or grinding
- Your brake or antilock braking system (ABS) warning light comes on
- Your car jerks or pulls to one side when braking
- You need to pump your brakes for them to work properly
- Your brake pedal feels unusually soft and spongy or hard
- You notice brake fluid leaks around the wheels or engine compartment