What does a brake caliper do?

Brake calipers are an essential part of your car's braking system. The job of the caliper is to slow the car's wheels by creating friction with the rotors. The most common is floating caliper, but on some cars there are swinging and fixed calipers. It fits over the rotor like a clamp. Inside each caliper is a pair of metal plates bonded with the brake pads.

When the driver presses the brake pedal, the small brake cylinder piston compresses brake fluid in the master cylinder. Because the brake fluid doesn't compress, this force is instantly transmitted to the brake caliper, which clamps the spinning rotor, causing the wheel to slow and stop.

Though only comprising a few parts of your car, brake calipers are one of the most critical parts, enabling controlled braking in various situations. As they are a key safety component of your car, it’s important that your brake calipers are well maintained and fully functioning at all times. If you think there may be an issue with your calipers or braking system, it’s important to get things looked at by a mechanic as soon as possible.

Renault

Groupe Renault is a French multinational automobile manufacturer, established over 120 years ago in 1899.

How popular is Renault in the United Kingdom?

This French marque has around 1.4million vehicles on the road in the UK today. Their numbers peaked between 2007 and 2008 at over 2million vehicles, yet have been on a slow decline ever since.

Sensibly priced options for middle of the road vehicles

Renault makes a wide-ranging selection of respectable vehicles.

As you’ll find with most manufacturers in today’s market, the cream of their crop lies with their SUV models. Other stand-outs are the RS models built for a much more fun driving experience and the electric models that are also sitting impressively in a steadily growing market.

Renault: a constant contender in all manner of motorsports

In the 1970s, Renault set up a dedicated motorsport division that went on to take the winners title in the Le Mans 24 Hours in 1978, with the Renault Alpine A442. They have been competing and achieving successes in both rallying and Formula One ever since.

Renault Formula One

Renault debuted their first formula one car (and team) at Silverstone in 1977; it was the first of its kind to include a turbo engine. The team continued until 1986 and shortly after, in 1989, they began to supply engines to the successful Williams-Renault car.

The Benetton team was renamed Renault F1 in 2002, and the team went on to win the constructors championship in both 2005 and 2006 with Spaniard Fernando Alonso at the wheel.

More recently, Renault powered the winning Red Bull Racing team in 2010 and returned to racing as a team in their own right, from the 2016 season onwards.

How often should a brake caliper need replacing?

Brake calipers are usually very durable. On modern vehicles, it's not uncommon for calipers to last at least 100,000 miles or 10 years. However, if you experience any of the above symptoms, you should have your brakes inspected by a mechanic as soon as possible. Driving with stuck, damaged or faulty brake calipers is very dangerous as it will impact the effectiveness of your braking, meaning your presence on the road is a danger to all other road users.

It’s also important to keep in mind that bad brake calipers can cause excessive wear to the brake discs and pads, so having them repaired or replaced as soon as possible will be better for your wallet in the long-run.

What happens during a brake caliper replacement?

Our certified mechanics will:

• Inspect the brakes and determine if there’s a problem with one or several of the brake calipers. They will also advise if other parts of the braking system need replacing too.

• They will then replace the brake caliper and other parts of the brake, if necessary.

• Bleed the brake system and top up the brake fluid.

• Test drive the car and inspect the brake system again.

• Make any final, necessary adjustments.

What causes a brake caliper to break?

In general, brake pads and rotors wear out and need replacement far more often than calipers. Calipers tend to get damaged when a car is driven with worn-out brake pads or warped rotors. If these components are damaged it can cause the calipers to overheat, wear down or crack.

Calipers can also break if the rubber boot that protects the piston splits. Once this occurs, water and grit will seep into the pistons surface and cause pitting, which can lead to the piston getting stuck or damaged.

When should a brake caliper be replaced?

Brake calipers are pretty tough and durable. On modern cars, calipers should last at least 100,000 miles or 10 years. However, if you experience any of the above symptoms, you should have your brakes inspected by a mechanic as soon as possible.

What are the symptoms of a bad brake caliper?

Usually, there a few signs you can look for:

• If your brake pedal feels softer (less resistance when applying the brakes).

• If your car pulls to one side when braking.

• If the level in your brake fluid reservoir drops or if you notice a leak. Brake hydraulic fluid is a very pale golden colour, transparent and almost watery.

• If you notice brake fluid on the rims of your wheels.

• If you receive an advisory note regarding brake imbalance.

How often should you replace your brake caliper?

If you experience any of the above symptoms, you should have your brakes inspected by a mechanic as soon as possible. Driving with stuck, damaged or faulty brake calipers is very dangerous as it will impact the effectiveness of your braking, meaning your presence on the road is a danger to all other road users.

It’s also important to keep in mind that bad brake calipers can cause excessive wear to the brake discs and pads, so having them repaired or replaced as soon as possible will be better for your wallet in the long-run.

What happens during a brake caliper replacement?

Our certified mechanics will:

• Inspect the brakes and determine if there’s a problem with one or several of the brake calipers. They will also advise if other parts of the braking system need replacing too.

• They will then replace the brake caliper and other parts of the brake, if necessary.

• Bleed the brake system and top up the brake fluid.

• Test drive the car and inspect the brake system again.

• Make any final, necessary adjustments.

What is the average life of a brake caliper?

Generally, brake calipers are tough and durable. On modern vehicles, it's not uncommon for calipers to last at least 100,000 miles or 10 years. However, if you experience any of the above symptoms, you should have your brakes inspected by a mechanic as soon as possible.

Can you drive with a broken brake caliper?

No, you should not drive with a bad brake caliper. Driving with stuck, damaged or faulty brake calipers is very dangerous as it will impact the effectiveness of your braking, meaning your presence on the road is a danger to all other road users.

The law, vehicle regulations and your MOT

The efficiency and balance of brakes is checked on MOT tests, therefore it's important that every component of your brake system is in good condition, including your brake calipers. Because your brakes are arguably the most crucial safety component in your car, your vehicle will fail its MOT if they are not functioning properly or are damaged.