Jekit Rear 355*28mm Drilled Disc Center Cap Bracket For Supra TT

What is a brake caliper?
First, let’s take a look at your brake system and understand what a caliper does. A caliper is a component of a disc brake system – the most common on today’s passenger vehicle. That system relies on hydraulic pressure to operate. When you press on the brake pedal, force is exerted through fluid inside a network of hoses and tubes to the wheels. Attached to each wheel is a heavy metal disc called a brake rotor. As your wheels roll down the road, the rotors spin with them. Sandwiched around each rotor is a pair of brake pads. Those pads are suspended in a hydraulic clamping mechanism – the caliper.

Every time you step on the brakes, the calipers squeeze the brake pads against the rotors in the same way someone in a wheelchair might grab the wheels to slow down. A bicycle works in a similar fashion. When you grab the brake lever, a cable actuates a caliper to squeeze a pair of rubber brake pads against the sides of your bike wheel. In each case, friction is created and the kinetic energy of a body-in-motion is converted to thermal energy to slow you down and bring you to a stop.

What are the signs that a caliper has gone bad?
Fortunately, your brake calipers are designed to last. Where your brake pads are designed to wear out with use (your rotors too, to some degree), a caliper is not considered a wear item, one that needs regular replacement. That said, they do sometimes fail. How can you tell? A bad caliper might present itself in the following ways.

During an inspection.
The best way to detect a faulty brake caliper is to have your brake system inspected regularly. A technician can spot the early warning signs of a failing caliper – corrosion, dirt buildup, leak, reluctant guide pins, and more – before they become a major issue. If a caliper already has problems, the technician might notice uneven brake pad wear resulting from a caliper that is either stuck open or stuck closed. Many repair shops offer some form of courtesy check with every oil change service where a technician will check the condition of major vehicle systems and components, including your brakes. Otherwise, you should schedule an inspection at least once a year.