Replacing vehicle brakes: when’s the right time?

Like other vehicle components, brakes will wear the more you use them. But you might have questions about how they work, how long they should last, and how to tell when they need replacing.

In this guide, we’ll cover everything about replacing brakes. All with expert technical guidance on what to do if your brakes are squealing or you have a spongy brake pedal. Let’s dive in.

How do brakes work?

Vehicle brakes have come a long way since they were introduced in the early 1900s. Where first iterations of the mechanism were solely dependent on a driver’s muscle power, a string of developments have made them far more reliable and easier to use.

In modern times, most vehicles have disc brakes in the front wheels and either disc or drum brakes on the back wheels. With discs, a hydraulic fluid causes the caliper to push the brake pad against the brake disc – creating friction to slow the wheels.

Parts in a vehicle braking system

There are multiple parts working together in a braking system. If you’re experiencing any issues with your brakes, it could be a sign of deterioration for one or more of the following components:

• brake discs – circular components attached to wheel hub
• brake calipers – house the brake pads and pistons
• brake pads – heat-resistant components found in brake caliper
• brake fluid – transfers pressure from brake pedal to caliper
• brake lines – transport fluid from cylinder to caliper
• brake servo – multiplies force applied to brake pedal
• brake master cylinder – converts force into hydraulic pressure

Each component within a braking system is inspected during an MOT as part of a ‘brake efficiency test’. But if you experience issues prior to a service or annual inspection, it’s important to contact a qualified technician.

How long do vehicle brakes last?

The life of vehicle brakes depends on a range of factors. As well as your driving style, it also comes down to the vehicle weight, average weight load per journey, and the quality of components used in your braking system.

On average, you can expect brakes to last anywhere between 25,000 to 60,000 miles or more. Ranges may vary depending on your vehicle make and model, so it’s always a smart idea to consult your vehicle handbook.

With modern vehicles, such as hybrids and EVs, you can expect braking systems to last longer due to assisting technologies used to slow the vehicle, such as regenerative braking. If you want to check the condition of your braking system, feel free to give us a call.

When to replace your vehicle brakes

Problems with your brakes are typically easier to spot than other components. If you notice any of the following signs, you should contact our team straightaway:

• noisy or squealing brakes when pushing on the pedal
• spongy brake pedal that’s not as responsive
• leaks from the brake lines
• vibrations or pulling felt through the steering wheel
• illuminated brake warning light

As tempting as it might be to delay action on deteriorating brakes, it can potentially become a danger to you, your passengers, and other road users. Not getting things fixed can also lead to a failed MOT.