Wheel bearing noisetest

In my 50 years in the auto repair industry, I can’t recall one good story about wheel bearings. Most involve some sort of brake system failure, tires exploding, or fire from a seized red-hot bearing igniting axle grease. Bad wheel bearings should not be ignored.

Under normal driving conditions, wheel bearings should last 85,000 to 100,000 miles. They can fail for several reasons, including:

Wheel bearing noisewhen driving

A former co-worker did a front brake job on a mid '90s Buick LeSabre, including replacing the rubber caliper bushings. He forgot to install one of the bushings and sent the car out the door. Needless to say, the customer experienced a loud clunk every time she stepped on the brakes, so she took it to a Buick dealership, which used a “chassis ear” to find the glaringly obvious problem. They charged the customer $120 per hour to use the “chassis ear” on the car for two hours, then charged $130 to install a $2 bushing in the caliper (a five minute job). How they missed that problem installing the microphones is beyond me, why they had to test drive the car for two hours is even further beyond me, and why the customer didn’t bring the car right back to us is also beyond me, but not as much as this tale of either inordinate ignorance on the dealership’s part, or a complete and utter ripoff. All told, we had to reimburse the customer about $400 to have the Buick dealership perform a diagnosis that any reasonable mechanic could have diagnosed in the parking lot and fixed in ten minutes for $20 or less.

This 8 x 22 x 7 mm (608-ZZ) bearing is a metric deep groove ball bearing. The 608-ZZ inner diameter is 8 mm, the 608-ZZ outer diameter is 22 mm, the 608-ZZ ...

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Have you checked the CV joints for problems? They typically pop and click when they go bad, but they can also make roaring sounds.

I’ve heard of the “magic ear,” but never heard it called that. It’s referred to as a “chassis ear” by a lot of mechanics. I’ve never used one, but I have a story.

Sometimes these “whats making the noise” type problems have been resolved by using the “magic ear” (microphones that clamp on components).

Frontwheel bearing noisesymptoms

However, on some vehicles, it can be less than $100 per wheel. And you can save hundreds in labor if you DIY. If you don’t have the tools, most auto parts stores will lend you the specialty tools and equipment needed.

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I’m not saying that’s what wrong with your’s, but at 217K it’s worth taking a look at. Those mounts could be worn out or breaking down.

Wheel bearingreplacement cost

I’ve replaced hundreds, if not thousands, of wheel bearings. One thing I’ve learned: A bad wheel bearing always gives an indication it’s failing. These include:

The cage and rollers are held together inside a hardened metal ring called a “race.” The seal keeps grease in and damaging water and debris out. Wheel bearings are installed inside, and secured to, the suspension, either by press-fit, bolts or a snap-ring. Once mounted, the wheel bearing rides on the axle shaft, allowing the tire/wheel to spin effortlessly.

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Wheel bearing noisewhen accelerating

Older rear-wheel-drive cars or trailers use a set of two tapered roller bearings that face each other. These should be routinely serviced every 20,000 miles, or once a year.

I tried my best to look at all of the suggestions here - and even did ridiculous things with a piece of hose & zip ties while test driving (the poor man’s “magic ear”/extended stethoscope). In the end I couldn’t actually verify for certain that it was the bearing.

What does a bad wheel bearingsound like at high speed

I have a '95 Caravan, FWD It has what I would call classic wheel bearing noise. Get it up to 45mph or so and it sounds like there’s a small engine airplane flying along with you. Turn left the noise goes away. Turn right, the noise gets worse. It sounds to me like it is in the front. (This is noise only - it doesn’t come with any vibration). Both rears had some contamination, a little play and a little noise so I just went ahead and replaced those - not having high hopes that that was the source of the noise because they were bad, but not that bad. The problem is that neither of the fronts show any signs of a bad bearing upon inspection. There is no play in the wheels, and they aren’t noisy when you spin them. Nothing is loose or rubbing. The tires are in VGC, and I moved them around with no change. The fronts bearings are the sealed hub type, and expensive, so I’m not going to replace them on a guess. The van has 217K on it & the fronts were done at some point, but it was so long ago I can’t remember - i.e. they could be due. But what else would act this way? And what might be the best way to find out?

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On modern front- and four-wheel-drive cars, wheel bearings are a set of permanently sealed, precisely machined steel ball or straight roller bearings. The balls or rollers are encased in a “cage” that supports the bearings, allowing them to rotate freely.

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One way to check for rough bearings is, with the tire off the ground, place your hand on the strut spring. Now slowly rotate the tire. If the bearing is rough, it sometimes can be felt in strut spring.

The average cost to replace a sealed wheel hub bearing is around $350 per wheel. However, depending on the make and model, the shop labor rate ($47 to $215 per hour, according to AAA) and any additional damage could push the cost beyond $1,000 per wheel.

Wheel bearing noisequick fix

It’s possible to have tight wheel bearings that do not make noise when the wheels are off the ground. Apply the weight to them and it’s a different matter.

NOTE: Whether you DIY or your mechanic replaces the bearing, always install a new axle hub nut. Most hub nuts are prevailing torque fasteners. They’re used on critical components, like securing axle shafts to hub bearings, where a loose nut could lead to disastrous consequences.

What does a bad wheel bearingsound like while driving

I’ve experienced front bearing failure and noise that could not be felt by spinning the unloaded wheel or rocking the wheel at the 0/180 position. It made plenty of noise going down the road, though.

It would respond to steering the way your’s does. I didn’t argue when they decided to replace the bearing. They were nice about it when that didn’t fix the problem and worked with me on the total repair bill when they aligned the engine and the noise stopped. I guess a mount was not isolating the engine and its vibration from the vehicle’s (Dodge Sedan) body.

Sorry oldschool - I thought my initial mention of it spoke for itself. I should have added that I am going to rig up a chunk of hose to my stethoscope.

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Driving on a bad or failing wheel bearing is dangerous. If ignored, it can quickly turn into a safety issue and an expensive repair.

Wheel bearings allow cars and trucks to run smoother and more efficiently by reducing friction and supporting vehicle weight.

202185 — Strange Noises Bad wheel bearings can cause a variety of strange noises, so it's best to take note of anything you hear. · Grinding If your car ...

My opinion? If your vehicle has more than 50,000 miles or has been driven in harsh conditions, then it’s logical to replacing wheel bearings on both axles. However, if your vehicle has low mileage and the other bearing is in good condition, replacing only the damaged bearing should not be a problem.

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I had no idea that a “magic ear” was a thing - though I’d considered a low tech equivalent - just running a long piece of vacuum hose out & under attached to my stethoscope. I guess its not as nuts as I thought.

Never reuse any wheel bearing (sealed or tapered) that’s loose, worn, noisy or shows any signs of wear. Trying to fix a loose or damaged wheel bearing can result in an accident and severe injury. Even if a pro suggests repairing a bearing, don’t let them.

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