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As bearings wear, they create more noise. The noise from a wheel bearing will be a constant droning or scraping noise and is the best way to tell if there is a problem.

Not sure what to look at, or hear for when they might need replacing? Worried about the cost of wheel bearings? Or simply want to understand a bit more about how wheel bearings work?

If you hear an unfamiliar noise when drifting to the left, there may be a problem with your right wheel bearing. If the noise occurs when you drift right, the left wheel bearing may be faulty.

The key word above is “listen.” Though you may be able to jack-up your vehicle and check the wheel for movement and play, noise will typically be your first (and best) indicator that you’ve got a wheel bearing on its way out.

Joseph has written about engineering and cars for Autozilla, Komaspec, and several engineering manufacturers. When he's not writing or tinkering with one of his five cars, Joseph dreams of owning an Alfa Romeo 33 Stradale.

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The takeaway here is that early detection is important. And narrowing it down to the precise wheel can help save you some time and money in diagnostic costs.

Joseph has been writing about cars for over seven years and writing for Bumper for over two, blending his passion for automobiles with a talent for storytelling.

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Not only can this cause a wayward steering feel, but it can also wear out your front tyres faster. If your car feels like this when steering and shows other signs of a worn bearing, get it checked as soon as possible.

A wheel bearing is typically composed of a series of small roller bearings arranged in a circle and encased in a durable shell. The assembly is packed in grease and sealed to prevent excessive moisture and grit ingress. Then, the whole thing slips around the vehicle’s axle or spindle, where it can spin right round, baby.

Also you can check a bad bearing buy taking off the grease caps then taking on a short run. Stop the car and with a thermometer point it at the centre of the bearing both sides of the car.The hottest bearing is the most worn and will give the loudest noises.

Hello Marius, it’s not a turn, per se. It’s a slight, gentle shift (left or right) while you’re moving in a straight line—just enough to take some weight from the other side of the vehicle for a slight moment. When it’s unloaded, the noise may stop and, when it shifts back, it may start back up. … Again, it’s not a 100% scientific diagnostic, but it’s worked for us several times in the past.

We’ve got a really good article on driveline noises that goes into more detail. Check it out here: Quick Guide to Diagnosing Differential & Driveline Noises

The wheel hub - the part that the wheel bolts to - is held in place by the hub-nut, which prevents the wheel and hub from coming off the axle.

The traditional construction of a bearing is two rings, called races, and small balls. When assembled the balls transmit the load between the inner and outer races whilst allowing rotation and retaining their position laterally (side to side).

However, life expectancy depends on how often you drive and the condition of the roads you drive on. This may mean wheel bearings need replacing sooner or later, but they won’t need replacing regularly.

If you can hear a new noise, particularly a droning that increases in volume and frequency with speed, there's a good chance you have a failing wheel bearing.

You may also start to feel it through your steering wheel or in your backside seismograph. Again, a wheel bearing’s job is to ensure your wheel spins smoothly. When it doesn’t, you’ll probably start sensing unpleasant vibration and noise throughout the passenger cabin.

Paul is the editor of OnAllCylinders. When he's not writing, you'll probably find him fixing oil leaks in a Jeep CJ-5 or roof leaks in an old Corvette ragtop. Thanks to a penchant for vintage Honda motorcycles, he spends the rest of his time fiddling with carburetors and cleaning chain lube off his left pant leg.

But before you point the finger at a wheel bearing, you want to make sure the noise isn’t coming from somewhere else. So here are a few things to consider:

That’s because veering like this shifts the weight off the side of the particular offending wheel for a few moments. Now unloaded with less stress, the bearing might shut up for a second and be perfectly content. When the vehicle weight shift returns to normal, the bearing is back to being loaded and it’ll start to whine again (sometimes literally).

It often boils down to both the vehicle and the driving conditions. All-wheel-drive cars put different demands on wheel bearings than, say, front wheel drive cars. Late-model performance cars place stresses on wheel bearings that regular commuter cars don’t. Mud-slinging off-roaders subject their wheel bearings to muck and grit that a street-driven car rarely sees. Make sense?

Howdo wheel bearingswork

Because they support the road wheels, wheel bearing noise depends on speed. If you notice a noise that stays the same volume and pitch when doing 30mph or 70mph, it’s probably not a wheel bearing.

When a bearing completely fails, the hub nut can no longer stop the outer bearing race, hub and wheel from sliding off the axle. In short, the wheel can literally fall off the car.

Hey Randy, it’s no so much a turn as it is a gentle, momentary veer–enough to unload weight on the opposite side for a fraction of a second. Once the steering wheel returns to neutral, the weight re-centers and the noise returns. Make sense?

Because a bearing's job is to reduce friction, when they’re not working as they should, more friction and therefore heat is generated. This can often be felt on the wheel after a long drive.

But good news there, as there’s an easy test that may help. While it’s not 100% foolproof, if you notice the noise stops while you’re slightly veering left or right, then an opposite side wheel bearing is the likely culprit.

When doing an MOT, the tester will lift your car and firmly pull on the wheels in various directions. Excess movement in the wheel, when pulled from the top or bottom, is usually a symptom of a failing wheel bearing.

Typically it is cheaper to replace a bearing on a non-driven axle, as there are fewer components to remove, with most cars being front-wheel drive (except for many BMW and Mercedes cars) this means the rear bearings are cheaper.

This can start to happen because the wheel bearing ensures the wheels are rotating in a single plane and not moving side to side when the bearing wears out.

A wheel bearing has a real simple job: It makes sure that your wheel spins freely, without any binding or vibration. A wheel bearing’s goal is to mitigate the effects of friction, which ultimately improves your car’s ability to roll smoothly—all while reducing wear to ensure it’s able to do so for a long time.

Modern wheel bearings are often made into modular units that bolt on and off the car for easy maintenance. Older cars, and some new ones, require powerful hydraulic presses to force out the old bearings and ‘press in’ the new ones.

Very, very good point–we’ve even seen folks pinpoint a trailer bearing that was physically hot to the touch. Heat’s a key byproduct of friction, so it’s often a telltale sign of a bad bearing.

How manywheel bearingsdoes a truck have

If you turn left, you unload left wheel, sake with right. If you turn left and sound dissapears it means that your left bearing is bad.

Obviously, this is an extremely dangerous situation. It can cause a complete loss of control and a high chance of injury.

You can estimate your wheel bearing cost depending on the type you buy. Here’s a quick overview of the different price brackets:

Be careful when touching any part of the wheels as they can become very hot depending on the severity of the bearing issue and if you have been braking hard. But if one wheel is slightly warmer, this could indicate a bearing problem.

While a mechanic will be best placed to properly diagnose your wheel bearing issues, there are some symptoms to look out for. Here are four signs drivers need to know:

The noise/vibration might only be noticeable at certain speeds, and it may even go away momentarily depending on chassis movement (more on that in a sec). In any event, it’ll likely get worse as the bearing continues its progression towards complete failure, so it’s good that you catch it as early as possible.

However, determining which one is at fault takes a little more investigation. See below for instructions on how to examine wheel bearing problems.

So while at highway speeds, if you can safely(!) rock the steering wheel slightly left and right to shift the vehicle’s weight to each side, it may further help you diagnose where the noise is coming from.

Howdo wheel bearingsgo bad

Now you’ve figured out roughly where the offending bearing is, it should be pretty easy to determine which side is at fault:

But given the amount of times it has to keep the wheels spinning really, really fast (and the rain-, dust-, and salt-rich environment it often has to work in), a wheel bearing will eventually wear out. While a failed wheel bearing can be a big problem, the good news is, it’ll probably give you plenty of warning that it’s going bad—you just have to know what to listen for.

Wheelbearing replacement cost

It’s always a challenge to describe a noise in text, but a bad wheel bearing will often start out as a “growl,” sort of like a dull, soft grinding noise. It can also be a whine, a hum, or a soft roar. In some cases, bad wheel bearing noise could even manifest as a clunk or squeak.

Like many components on a car, wheel bearings almost always give plenty of warning, audible and otherwise, that they’re starting to fail. Also, like other parts, the consequences of allowing one to fail can be severe.

Wheel bearings are a small yet mighty part of your car vital to movement and safety. If they’re not functioning properly, you must replace them immediately.

If it's too difficult to tell, especially with how well sound-insulated modern cars are, a passenger can try listening to the noise from the front and then rear seats.

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Whilst wheel bearings can take a while to get to the replacement point, it’s still important to have the bearing checked as soon as you notice a new noise or feel any symptoms. Hopefully, this guide has introduced you to wheel bearing replacement costs and answered some questions you may have had. When in doubt, consult a professional mechanic or work with a garage to achieve a safe solution.

Hey Patty, I checked and it looks like, for the GMC Terrain, they’re sold as a wheel bearing & hub assembly, just like the ones in the topmost picture of this article—which typically makes them a bit easier to replace. Currently, Summit Racing carries over a dozen different types, with quite a few in stock, ready to ship. Click here to see the wheel bearing hub assemblies for 2013 GMC Terrain. (Or, there’s a good chance you’ll be able to find a replacement at your friendly local auto parts store too.) … Just remember to order the correct one for the correct wheel–Front or back, driver or Passenger side—as the application can differ a lot, particularly on AWD vs 2WD models. Good luck!

Another determining factor is when the noise is present; if, when braking, the noise gets louder, this usually means that one of the front bearings is worn out. This is because the action of the weight of the car shifts more to the front wheels when decelerating.

So, if you’re wondering if wheel bearings are expensive, the price ultimately comes down to which specific parts your car needs.

Wheel bearings are considered a standard wear and tear item on a car. Depending on the number of miles you drive and how long you keep a car, you should expect to have to replace them at some point.

Wheelhub bearing

That’s a tough question to answer with a definitive mile threshold. We hear tell of wheel bearings lasting the life of the vehicle, like 200,000 miles and up. Conversely, some cars (cough*old Subarus*cough) seem to go through wheel bearings every few years or so.

Bearings are absolutely everywhere in machinery and vehicles. Anything with moving parts will always have a bearing of some kind. Car wheels require strong and precise bearings to cope with the large forces of bumps and turns.

Since a wheel bearing is located at or near the wheel, the noise will probably be coming from one corner of your vehicle—provided you’ve only got one bad bearing, of course.

Wheel bearing replacement is a common issue, so the parts are relatively cheap, and any competent garage well understands the process. Typical parts prices range from £30 to £250, but then you have to include the labour costs as well.

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It’s usually pretty easy to determine if the noise is coming from the front or back, given the driver’s seating position and their proximity to the front wheels. The hard part is often determining whether the noise is coming from the left or right (driver or passenger) side of the vehicle.

I’m confused at the question – but if you’re asking about handling then yes, a bad wheel bearing can affect the way the car handles and moves—it’s not something you want to drive on, so if you suspect it’s going bad, have it inspected as soon as you can.