Squeaky brakes are one of those car problems that can be difficult to ignore. Whether you hear a high-pitched squeal every time you brake or notice a brief noise when setting off on a cold or wet morning, it is natural to wonder whether something is wrong.
The good news is that squeaky brakes are not always a sign of a serious problem. Moisture, cold weather, surface rust and new brake pads can all cause temporary noises. However, persistent squeaking can also be a warning that your brake pads are worn or that another part of the braking system needs attention.
Understanding what could be causing the noise can help you decide what to do next.
In this guide, we cover the most common causes of squeaky brakes, when you should get them checked and how to fix the problem.
Potential causes of squeaky brakes
There are several reasons why your brakes might squeak. The timing of the noise, how long it lasts and whether you notice any changes in braking performance can all provide clues about the cause.
Weather conditions
Cold and wet weather can sometimes cause brakes to squeak, particularly when you first set off.
When temperatures drop, moisture can collect around the braking components. A thin layer of surface rust can also develop on brake discs when a vehicle has been parked in damp conditions. The first few applications of the brakes can then produce a squeaking or light grinding noise as the moisture or surface rust is cleared.
This is usually temporary and should disappear after normal braking.
However, if the noise continues throughout your journey, becomes louder or is accompanied by a change in how your brakes feel, it is worth getting them inspected.
For more information about preparing your vehicle for colder conditions, see our guide to winter safety checks.
Heavy loads
The more weight a vehicle is carrying, the more work its brakes need to do to slow it down.
If you regularly carry heavy equipment, tools, goods or passengers, your brakes can experience greater heat and pressure. This can contribute to faster brake wear and may make squeaking more noticeable.
For drivers of vans and other working vehicles, this is particularly important. Carrying a heavy load within your vehicle's permitted limits still means the braking system has to work harder than it would when the vehicle is lightly loaded.
If you regularly carry heavy loads and have noticed persistent brake noise, consider having the braking system checked as part of your routine vehicle maintenance.
Moisture
Moisture is one of the most common reasons for temporary brake noise.
After rain, washing your car or leaving it parked overnight, water can collect around the brake discs and pads. A light layer of surface rust can also form on the discs.
You may notice a squeak or even a slightly rough sound when you first apply the brakes. In many cases, this will disappear after a few normal applications as the moisture and surface rust are removed.
If the noise does not go away, however, do not assume that moisture is the cause. Persistent brake noise should be investigated, particularly if you notice reduced braking performance, vibration or other unusual sounds.
Worn-down brake pads
Worn brake pads are one of the more important causes of squeaky brakes to be aware of.
Brake pads are designed to create friction against the brake disc when you press the brake pedal. Over time, this friction gradually wears the pads down. Many brake pads also have wear indicators designed to produce a high-pitched noise when the pads become sufficiently worn.
If your brake pads have reached the end of their usable life, they will need to be replaced. Continuing to drive with excessively worn pads can also result in damage to other braking components.
If you have noticed squeaking alongside a brake warning light, grinding, reduced braking performance or a change in how the pedal feels, arrange an inspection as soon as possible.
You can also learn more about checking your braking system in our guide on how to check the brakes on your car.
Dirty brakes
Your brakes are exposed to road dirt, dust, grit and other debris every time you drive.
Brake dust can build up over time, while small pieces of grit or other debris can sometimes become trapped around the braking components. This can create unwanted noise when the pads and discs move against each other.
A vehicle that has been parked for an extended period can also develop a build-up of dust or surface corrosion.
If you suspect dirt or debris is responsible for the noise, it is better to have the brakes inspected rather than attempting to remove anything from the braking system yourself.
Glazing
Brake glazing can occur when brake pads or discs are exposed to excessive heat.
Repeated heavy braking, riding the brakes or prolonged braking can generate significant heat. This can create a smooth, hardened surface on the brake pad, reducing the normal friction between the pad and disc.
Glazed brakes can produce a persistent squeaking or squealing noise. More importantly, glazing can affect braking performance.
If you suspect your brakes are glazed, they should be inspected by a qualified professional. Depending on the condition of the components, the appropriate solution may involve cleaning or replacing affected parts.
New car or new brakes
It can be surprising to hear squeaky brakes on a new car, but some noise can be normal while new brake components bed in.
The same can apply after having new brake pads or discs fitted. During the bedding-in period, the surfaces of the new components are gradually settling against each other.
Follow the bedding-in instructions provided by your vehicle or brake manufacturer rather than deliberately carrying out aggressive braking to try to remove the noise.
If squeaking continues after the bedding-in period, becomes worse or is accompanied by other symptoms, have the brakes checked.
How to fix squeaky brakes
There is no single solution to squeaky brakes because the right fix depends on what is causing the noise.
For example, a brief squeak after rain may disappear naturally once the brakes have been used, while worn brake pads will need to be replaced.
Here are some of the steps that may help:
Potential cause | What may resolve it |
|---|---|
Moisture or light surface rust | Normal driving and braking may clear it |
Cold or damp weather | The noise may disappear as the brakes warm and dry |
Worn brake pads | Brake pads should be inspected and replaced if necessary |
Dirt or debris | A professional inspection and cleaning may be required |
Glazed pads or discs | The affected components may need professional attention or replacement |
New brake pads or discs | Follow the manufacturer's bedding-in guidance |
Sticking or damaged components | Professional inspection and repair |
Check your brakes
If your brakes are making an unfamiliar noise, the first step is to establish whether there are any other warning signs.
Look out for:
Grinding or metal-on-metal noises
Vibrations through the steering wheel or brake pedal
A brake warning light
The vehicle pulling to one side when braking
A brake pedal that feels unusually soft or hard
Reduced braking performance
A squeak that is persistent or getting worse
Noise that continues even when you are not braking
These symptoms should not be ignored. They can indicate a problem that requires professional attention.
Our guide to warning signs that your vehicle needs attention covers some of the other symptoms drivers should look out for.
Avoid putting unnecessary pressure on your brakes
Your driving style can also affect brake wear.
Where it is safe to do so, anticipating traffic and maintaining an appropriate following distance can reduce the need for sudden, heavy braking. Avoid riding the brake pedal unnecessarily, as this can generate additional heat.
Keeping your vehicle within its recommended load limits is also important, particularly if you regularly carry equipment or goods.
Have persistent squeaking investigated
If the noise does not disappear or you are unsure what is causing it, arrange a professional brake inspection.
Brakes are a critical safety component, so it is not worth guessing when there is a possibility that a worn or damaged component is responsible.
A mechanic can inspect the pads, discs, callipers and other relevant components to establish where the noise is coming from and whether anything needs repairing or replacing.
Are squeaky brakes dangerous?
Squeaky brakes are not necessarily dangerous. A temporary squeak caused by moisture, surface rust or new brake components bedding in may not indicate a fault.
However, persistent squeaking should not simply be ignored.
If the noise is accompanied by grinding, vibration, reduced braking performance, a brake warning light or another change in how the vehicle behaves, have the brakes checked promptly.
The key is to consider the noise alongside any other symptoms rather than assuming that every squeak has the same cause.
Do squeaky brakes fail an MOT?
Squeaky brakes alone do not necessarily mean that a vehicle will fail its MOT.
The MOT assesses the condition and performance of the braking system, rather than simply whether the brakes make a noise. However, if the squeaking is caused by excessively worn brake pads, damaged components or another issue that affects the braking system, this could result in an MOT failure or advisory.
If your brakes have started making an unusual noise before your MOT, having them checked beforehand can help identify any problems.
How can I prevent squeaky brakes?
Regular maintenance is one of the best ways to identify brake problems before they become more serious.
Keep an eye on how your vehicle feels and sounds when braking, follow the servicing schedule recommended by the manufacturer and have unusual noises investigated.
It is also worth carrying out regular checks of your vehicle's key safety components, particularly before longer journeys.
Cold weather can affect other parts of your vehicle too. For example, our guide on how cold weather affects your car battery explains what drivers should know before winter.
For journeys in particularly cold or icy conditions, you can also read our guide to stopping distances on icy roads.
Squeaky brakes FAQs
Why are my brakes squeaking?
Brakes can squeak for several reasons, including moisture, surface rust, dirt, worn brake pads, glazing, heavy loads and new brake components bedding in. If the noise persists or is accompanied by changes in braking performance, the brakes should be inspected.
How do I fix squeaky brakes?
The best way to fix squeaky brakes is to identify the underlying cause. Temporary noise caused by moisture or surface rust may disappear after normal braking, while worn pads, glazed components or other faults may require professional repair or replacement.
Why do my brakes squeak when it is cold?
Cold and damp conditions can allow moisture or a thin layer of surface rust to develop on brake components. This can cause temporary squeaking when you first drive. If the noise continues once the brakes have warmed up, they should be checked.
Why do my brakes squeak after rain?
Water and moisture can collect around the brake discs and pads after rain. A thin layer of surface rust can also form while the vehicle is parked. This can produce a temporary squeak or light grinding noise that usually clears after normal braking.
Why do my new brakes squeak?
New brake pads and discs can sometimes make noise while they bed in. Follow the bedding-in guidance provided by the manufacturer. If the noise persists, becomes louder or is accompanied by changes in braking performance, arrange an inspection.
Can heavy loads make brakes squeak?
Heavy loads increase the amount of energy the brakes need to dissipate when slowing the vehicle. This can increase heat and brake wear, which may contribute to brake noise. Persistent squeaking should still be investigated.
Should I drive with squeaky brakes?
It depends on what is causing the noise. A brief squeak caused by moisture or new brake components may not indicate a serious problem. However, squeaking alongside grinding, vibration, reduced braking performance or a warning light should be investigated promptly.
Can dirty brakes cause squeaking?
Yes. Brake dust, road grime, grit and other debris can build up around braking components and contribute to unwanted noise. If you suspect dirt or debris is causing the squeaking, have the brakes inspected rather than attempting to interfere with the braking components yourself.
