If one wheel bearing fails, there is no need to replace them on both sides. The remaining bearings should last for some years to come.

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If you hear a clicking sound that increases in frequency as the vehicle accelerates, there could be a problem with the wheel hub assembly.

The original equipment bearings on your vehicle are engineered for specific loads. Those bigger and wider tires look cool, as do tires with lower tread walls. But they place higher loads on the wheel bearings, possibly resulting in accelerated wear. That could present a safety issue if your wheel bearings fail.

“The good news is most of the time, a vehicle will let you know way before a failure ever happens,” said Gary Hardesty, Kelley Blue Book’s in-house service and maintenance expert and an A.S.E. certified master technician. “The key is to listen to your car. Most times, a failing wheel bearing will exhibit a growling type of noise that changes with vehicle speed. The faster the car (goes), the faster the frequency of the growl.”

The cost to replace one front-wheel hub assembly varies widely. Among the variables are the vehicle brand and model, the garage’s labor rate, and the cost of parts. The average out-the-door wheel bearing replacement cost without taxes is about $350 per wheel.

Wheel bearings connect a car’s wheels to the axles. They allow wheels to turn with minimal friction. Though wheel bearings are low-maintenance parts, they are important safety components of a vehicle’s braking, steering, and suspension systems. The one-piece hub assembly, between the drive axle and the brake disc or drums, incorporates the hub, wheel bearings, ABS (anti-lock braking system) wheel speed sensor, and mounting flange.

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Imagine driving on the freeway when the left front tire and wheel suddenly break off, sending your out-of-control vehicle skidding across several lanes of 65 mph traffic. This is not an exaggeration. This is reality, and can happen if you fail to notice the signs the wheel bearings are deteriorating and need immediate repairs. Your wheel bearing might be bad if you hear unusual sounds like humming, squeaking, or clicking. Some experts say a bad wheel bearing can sound like a bird chirping. Also, if your car wobbles or pulls to one side, you will want to get it checked.

Be aware that damaged tyres can make a noise similar to a damaged wheel bearing - especially if they have worn out in patches. Be sure to check your tyres.

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Bad wheel bearings can cause the steering wheel to vibrate. The intensity increases as the vehicle speed increases and the vehicle turns to the left or right. However, the vibration could be linked to an out-of-round tire (there could be a flat spot on the tire) or a tire that is no longer balanced. Another cause is damaged or worn suspension components.

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In cars, the car wheel bearings rotate on the end of the axles and fit snugly into the wheel hub. The hub is a kind of cup-shaped component found in the centre of each wheel. Located on the hub are lug bolts which are used to hold the wheel in place.

Editor’s Note: This article has been updated for accuracy since it was originally published. Rick Kranz contributed to this report.

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If your car wheel bearing locks up you won’t be able to move your car and will likely need to call for breakdown recovery.

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Your vehicle will signal that it’s time to replace a failed wheel bearing. For example, if you hear unusual sounds like humming or clicking, then your bearing might be bad. Watch out and listen for these signs and symptoms:

If there is excessive play in the steering, meaning the steering seems less responsive or less precise than normal, worn bearings could be causing the problem. Also, this could be a sign the vehicle needs a wheel alignment. If you have any of the signs listed above, visit a dealer service or auto repair shop.

However, luxury cars are more expensive to repair. Do note that if bearings go bad at one wheel, replacing the bearings at the other wheel on the same axle is unnecessary. Don’t let someone talk you into work that is not needed. Get the price estimate for wheel bearing replacement for your make and model of car.

Wheelhubbearing

Most drivers will enlist an experienced mechanic to replace their wheel bearings. As it is a rather labour-intensive process, expect costly invoice.

The typical sounds of worn-out wheel bearings are squealing and/or growling. The sound intensifies as vehicle speed increases. Try to pinpoint the location of the noise because it will identify the location of the worn-out bearings.

Wheelbearings

In order to identify if the damaged car wheel bearing is on the left or right, try driving your car steadily down a road at around 40mph while swaying (gently) from side to side. If a worrying sound is heard when turning left, the bearing issue is likely on the left - and vice-versa.

Wheel bearings are designed and manufactured to last a very long time, and as such can take a great deal of punishment. However, poorly-lubricated bearings can become very hot - which can cause irreparable damage.

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Driving with bad wheel bearings impacts the safety of a vehicle, and it could cause a serious car accident. We do not advise driving on them when they fail and recommend getting them checked out as soon as possible. Bad wheel bearings can damage things like your hub, the vehicle’s constant velocity joint (CV joint), or the automatic transmission.

Most drivers, when told by their mechanic that their wheel bearings need replacing, will respond with a blank expression. But while these components may be mysterious, they are fundamental to a smooth ride.

A wheel bearing is a circle of ball bearings secured in a ring called a 'race'. This simple yet ingenious design helps your wheels turn with the minimum of friction. They are found in cars, trucks and planes.

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Firstly, don't panic. Car wheel bearings are still operative for some time after you first start hearing the noise. But with that being said, you should address the issue swiftly, as there is an outside chance the car bearing could lock up - something you do not want to happen while driving.

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Wheel bearingreplacement cost

In this story, we’ll tell you quick facts to know, such as what causes a bad wheel bearing, how long you can drive on one, and the estimated replacement cost of a wheel bearing as you maintain your vehicle.

Changing a wheel bearing by yourself can be a fairly challenging job to tackle on your own, even if you have some basic mechanical experience. Having a press can make the task easier.

The bearings are tightly packed in a grease-filled, waterproof, sealed metal ring. This housing, called a race, is located inside the hub, and each wheel has one. Wheel bearings have a Herculean responsibility: They are engineered to support the vehicle’s entire weight.

Worn bearings may cause a vehicle to pull to the left or right when brakes are applied. The direction the vehicle pulls signals where the worn bearings are located, on the left or right side of the vehicle. However, this can also signal brake rotor or brake caliper problems.

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Technicians can check for wheel wobble by putting the vehicle on a lift and manually checking for wheel movement. Typically, it would be impossible to shake the wheel and tire. However, if it moves, the hub assembly needs immediate attention. The tire and wheel can literally come off the vehicle at any time, at any speed, if you don’t repair your vehicle.

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It's not easy to identify what sound your wheel bearings are making because you'll be driving at the time. However, the following should help....

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The most easily identifiable and common symptom of bad wheel bearings is audible. But it can be confusing. For example, the source of a humming noise can be linked to other issues, such as tires and the CV joint.

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If one tire wears out faster than the others, it could be a sign that the wheel bearings are worn. However, it also could be a sign the tire is improperly inflated (too much air pressure or not enough), the tires are improperly aligned, or the vehicle has damaged or worn suspension components.

Equally, if a wheel bearing seal is damaged, water and other debris can enter the component and it will fail - as evidenced by that thrumming, rumbling noise.

If you decide to replace the entire hub-and-bearing unit, since accessing the wheel bearing alone is extremely time consuming and tricky, you can expect to pay more for parts.

Hardesty cautions that if you think something is wrong, don’t wait to get it diagnosed: “The longer you wait, the more it will cost as other components may be damaged by a wheel bearing.”

Wheel bearings are theoretically engineered to last the life of the vehicle. There is no maintenance schedule for replacing wheel bearings, and there is no constant source of lubrication. However, they can be damaged, leading to failure.

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The sound of a damaged car bearing will start faintly and gradually get louder. It has been compared to the sound flipping a deck of cards against a bicycle spoke.

The anti-lock warning light may illuminate if the ring, tire, and wheel wobble, the wheel’s speed sensor is no longer operating properly, and the ABS may operate sporadically or not at all. See a professional for repair.

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Most vehicles today use sealed hub bearing assemblies that contain roller bearings. While we don’t address these, older cars used tapered roller bearings, which required servicing and preload adjusting to ensure the right amount of end play or axial clearance.