Wheel bearings let your wheels spin smoothly on the axle with minimal friction. When healthy, they're silent. When they start to wear, usually because internal grease has broken down, water has got in, or the bearing has simply worn out over tens of thousands of miles, the result is a noise that's easy to mistake for road noise at first, but has a distinctive pattern once you know what to listen for.
What a wheel bearing sounds like
The hallmark symptom is a humming, droning, or growling noise that increases in both pitch and volume as your speed increases. Unlike road or tyre noise, it doesn't change much when the road surface changes, and it often shifts noticeably when you gently drift the car left and right on an empty stretch of road: louder when leaning away from the affected side.
How to tell which wheel
Find a quiet, straight road and drive at a steady 40mph or so, gently weaving left and right. If the noise gets louder when you steer one way, the bearing on the opposite side is usually the one wearing. Passengers sitting in different seats can sometimes help pinpoint which side the sound is coming from too.
Other signs worth checking for
- A vibration through the steering wheel or floor, especially at speed
- Looser or less precise steering feel
- Uneven tyre wear
- In advanced cases, the wheel developing noticeable play if you check it while jacked up
- Worn suspension components can sometimes produce a similar feeling — if the hum is accompanied by a knock over bumps, see our guide to worn suspension components
Is it safe to keep driving?
Book it in soonA mild, consistent hum that changes with speed but no vibration or looseness yet. Get it checked within the next couple of weeks.
Don't delayA loud growl accompanied by vibration, or any noticeable play or looseness in the wheel. A bearing that fails completely can cause the wheel to wobble severely or, in rare but serious cases, seize or separate. Get this looked at promptly.
What it typically costs to fix in the UK
| Likely job | Typical UK cost |
|---|---|
| Wheel bearing replacement (front or rear) | £150 – £300 |
Range compiled from CheckKarro, Bumper, ClickMechanic and RAC UK pricing guides, 2025-2026. Your actual quote depends on your specific vehicle and garage.
Frequently asked questions
Is it safe to drive with a bad wheel bearing?
For a short while with a mild hum, yes, but it should not be left unaddressed. A wheel bearing that fails completely can cause the wheel to wobble excessively or, in severe cases, seize or separate from the vehicle. Get it checked as soon as you notice a consistent hum that changes with speed.
How do I know if the noise is a wheel bearing and not a tyre?
A wheel bearing hum typically changes pitch with speed but stays fairly constant otherwise, and often gets louder or changes tone when you gently weave the car left and right on an empty road. Uneven tyre wear tends to produce more of a rhythmic thrum that's steadier and less affected by turning. If in doubt, a mechanic can isolate the source by raising the wheel and checking for play.
How much does it cost to fix a wheel bearing in the UK?
Wheel bearing replacement typically costs £150 to £300 in the UK, including parts and labour. Costs are usually similar for front or rear, though access and labour time varies by vehicle.
Wondering if you should still be driving on this? See Is a noisy wheel bearing safe to drive on?
For other noises, see all car noise guides.
Not sure what's causing it?
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Try MechdThis guide is for general information only and isn't a substitute for a qualified mechanic's inspection. A failing wheel bearing can affect steering and wheel security, so have it checked promptly rather than waiting.