Squealing brakes: causes and fixes
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A squeal when you brake is usually the brakes telling you the pads are wearing, or that something is caught between the pad and the disc. This guide explains what the noise commonly means, what to look for, and which part it usually involves.
What usually causes squealing brakes
The most common cause is brake pads wearing thin. Many pads carry a small metal tab that touches the disc when the pad gets low, and the tab makes a high-pitched squeal as a warning. A squeal can also come from dust or grit caught between the pad and the disc, from pads that have glazed over after heavy braking, or from new pads that have not bedded in yet.
A squeal that appears only when you brake lightly and goes away when you brake harder is often the wear tab. A squeal that is there every time you brake, whatever the pressure, is more likely to be the pads themselves or something caught in the brakes.
What to check by looking and listening
Listen to when the noise happens — light braking, hard braking, or all the time. Look at the discs through the wheel if you can see them: a disc with a deep groove or a lip on its edge has been wearing unevenly. Look at how much pad is left if you can see it through the caliper — a pad that is nearly down to its metal backing needs replacing soon.
Brakes are safety-critical, and this guide does not tell you how to work on them. If the brakes feel different — softer, harder, or pulling to one side — or if the squeal has turned into a grind, get the car looked at before you drive it further.
Which part is usually involved
A squeal most often points at the brake pads, and sometimes at the discs they press against. If both are worn, a matched pad and disc kit covers the axle in one set.
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Questions about squealing brakes: causes and fixes? Call 07961 404768. Or message us on WhatsApp.
Frequently asked questions
A squeal on light braking is often the pad wear tab touching the disc, which is a warning that the pads are getting thin. It can also be dust or grit caught between the pad and the disc. If the noise is there every time you brake, the pads are the first part to look at.
A squeal is a warning, not a failure — but it means the pads are wearing and need looking at. If the squeal turns into a grinding noise, or the brakes feel different, get the car looked at before you drive it any further. Brakes are safety-critical and need skill and tools to work on.
New pads can squeal for a short while as they bed in against the discs. A squeal that stays after the pads have bedded in, or that gets worse, is worth looking at — call 07961 404768 with your car's make, model, year and engine and we will check the pads that fit.