What is a wheel bearing?
93Your mechanic says you need a wheel bearing, what's a wheel bearing? I will make this as easy as possible to understand using pictures, video, and my own interpretation of what a wheel bearing is, what its job is, where it's located and the noises it makes when it's damaged.
What is a wheel bearing?
A wheel bearing is exactly what it sounds like, it's a bearing for a wheel. What's a bearing you ask? It's a bunch of steel balls held together by a metal ring, which is called a race. There are many different styles bearings but are all very similar and all do the same job, they help something spin with very little friction like a wheel, turbine, or a carnival ride.
A wheel bearing on a car is a set of ball bearings that support the wheel and ride on a metal shaft which is called an axle shaft. The wheel bearing is located at the hub, the hub is located at the center of your wheel, when you are looking at a wheel on a car, the hub is located where the lug bolts come through the wheel. The lug bolts are pressed into the hub, and the wheel bearing is pressed into the hub as well, from the back side of the hub.
What does a wheel bearing do?
Wheel bearings are use on all kinds of vehicles from bicycles to aircraft and they all perform the same job, they allow the wheel to spin freely. Depending on the application, most wheel bearings are hardened steel and will withstand a lot of abuse. A wheel bearings worst 2 enemies are heat and water. Heat caused by lack of lubrication can destroy a wheel bearing, and water that penetrates the sealed bearing will destroy the wheel bearing as well.
Most wheel bearings manufactured today are sealed bearings, they come from the factory pressed together as an assembly, front race, bearing set, center race, bearing set and outer race with seals on both front and rear race. Bearings are sealed from the elements, water, and debris by a non penetrable seal that also seals in high temperature wheel bearing grease. When the seal is broken or damaged, the wheel bearing will fail and start making noise.
This is a wheel bearing noise
What kind of noises do wheel bearings make?
A wheel bearing noise gradually becomes louder with time and with speed, what I mean is when the seal is broken or damaged, the wheel bearing will not just start making a loud noise. At first, it will be a very faint noise and within a month, it will be very noticeable. When the wheel bearing is making a noticeable noise, the noise will be more obvious at faster speeds.
The noise that a wheel bearing makes is like the noise that your tires make when hitting a rumble strip on the highway, just not quite as loud, same noise at an 1/8 of the volume, or like the sound of playing cards in your bicycle spokes, remember that noise? It's a rotating noise and it will gradually get louder in time. The only fix for damage wheel bearing is to replace it. If a bearing is noisy, repacking it with grease will not make the noise go away.
How to Diagnose a Wheel Bearing Noise
How much does it cost to replace a wheel bearing?
Having a wheel bearing replace on your car is a bit expensive because of the labor involved. Bearings manufactured today are usually press into the hub, and if you drive a 4 wheel drive or a front wheel drive vehicle, it's just more parts to remove before you can get to the wheel bearing. Wheel bearing do not fail quick and usually give you some time before you need to have it replaced.
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How do I know it's a wheel bearing making the noise?
If you think you might have a wheel bearing noise, here is a tip on how to check it and to figure out which side of the car the noise is coming from. While driving down the road about 40mph, sway the car side to side slowly, this will shift the weight of the vehicle from one side to the other. Notice when the noise gets louder or softer. When the weight of the vehicle is on the side with the bad wheel bearing, the noise will be louder. Do not drive crazy and cause the car to spin out, it's a very subtle sway to the vehicle, just enough to shift the weight.
Be cautious, tires can make a noise very similar to a wheel bearing when the tires are chopped. The best way to find which wheel bearing is making noise is to raise the vehicle on a lift, have someone in the vehicle run it at about 40mph, using a long screwdriver or stethoscope, rest it on the hub near each wheel bearing, listen through the stethoscope or the handle of the screwdriver for the noise, I guarantee you will be able to determine which wheel bearing is bad.
I hope this article will help you with your question, "what is a wheel bearing?" noises are the hardest problems to diagnose on vehicles because you have to drive the vehicle in order to reproduce the noise, so take it easy on your mechanic if he spend too much time trying to chase down your noise. If you have any questions, please feel free to leave one in the comments box, I will answer it asap.
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Thanks for this! I'm trying to figure out if my noise is my rear wheel bearings or my tires. I have an 08 Subaru Outback, and Goodyear Assurance Tripletreds. The goodyears have about 45k on them, and the car has about 81k. I keep thinking it's the tires, because everyone is complaining about how loud they are, but now I'm thinking it could be a wheel bearing in the rear. Is there any way to distinguish between the two? It seems from what you've said, they are very common noises.
thanks very much, Eddie. i looked around quite a bit on the 'net before finding your diagnostic. very helpful!!! wish you were in humboldt.
is there a way to use the screwdriver to listen to the bearing assembly without getting underneath the car? i don't have a lift available to me, only jack stands.
Hi i was wondering do cars need wheel bearing on the front and back . Sometimes when i drive i hear a noise and if i hit a speed bump in the road i hear a noise that sounds something like something is moving. I was told that this could be a motor mount. I have a 05 altima. Can u email at tekeshajohnson@att.net w with a responce
Hi! This is a great site for people like me who know very littel about car issues to get answers. I think that this is my cars issue but not sure. It shakes between speeds 50-63mph and it did not start until i received new front tires and new back tires 2 weeks prior to that. But it only happens in the front. Does that sound about right to you because everybody else say I need an alignment. Please help! Thanks!
Hi Eddie, I had my front wheel bearing replaced recently after I heard the noise at only 40mph. In less than a month, I could hear the sound again. This indicates my wheel bearing need to be replaced right? So what is the probable cause to it? It only lasted few weeks. Now I have to pay for another replacement. Sigh~
Eddie, I brought my car back to the garage and now they found out that the hub need to be replaced as well. That is why the wheel bearing only lasted for few weeks. Well that's what they said. Is this true?
Very interested read!Don't have a problem with my wheel bearing sin my car, thankfully bit your article was easy to understand on a subject I knew nothing about. Thanks!
really useful info here, was about to take a wheel off my car to try changing myself but am now thinking better of it!
Hi, I recently purchased a 07 Nissan murano, as I drive I hear a turning noise that gets louder the faster I go. I can auctually feel and hear a rapid turning movement under my left foot as I'm driving. Does this sound like a wheel bearing problem? I took it to Nissan and that's what they said but I wanna make sure I'm getting a good diagnostic.
Thanks
Yes, the noise sounds the same. They had to order the part, I'll be sure to let you know how everything turns out!
Hi Eddie. Great article. I have just had my wheel bearings replaced today on my rear driver side. on driving home, the noise came back and I thought 'WHAT!'. But it went after a few minutes. What was this and is this normal? They relaced everything as far as I'm aware!
Thanks in adance
How long can you drive on a damaged or broken wheel bearing before it gets dangerous? and what will eventually happen to your car when youre driving over 65mph with a highly damaged wheel bearing? I'm nervous.
Hi Eddie thanks for the reply!
Further to my previous comment and your advice, I have driven the car, but no noise! Although I am now paranoid and can't enjoy my driving. Any advice? Should I get it rechecked or to you think I am being over paranoid?
cheers in advance it is much appreciated
Hello Eddie,
Your information here is very helpful. And I thought I will also get some information. Well, my car makes no noise while driving on a highway but when making a right deep turn, there comes a creaking kind of noise. I thought it must be due to power steering fluid but is not. Can my case be one associated to bearings??? Thanks.
Hi Eddie,
Thanks for the information. Well my car is Nissan Pulsar 1998. I bought recently and I have no clues of its history. In addition to my query before, when turning sharply to the right, I feel like the tyre is rubbing to car body but is not. But when I turn left sharply, no noise comes. Would that mean my front left tyre and its parts need inspection immediately...is it dangerous to prolong checking???
Thanks.
Thank you for your help. You're the go-to man! When my income tax comes back i'm fixing it. I'll let you know what it is.
Our 92 k5 blazer has an issue on the drivers side. Both cv axles were just replaced but a popping sound at the drivers side wheel contines. At a crawl in drive and reverse, every 1/2 second there is a loud pop accompanied by the whole wheel jumping with each pop. Is this a shot bearing or hub?
Dry pavement in 2wd. My husband installed the cv axles himself. The popping was there before the axles were replaced. They were shot for sure. It seems to me somehing catches then releases. And its at 5mph max. Maybe it is a ball joint issue because when I drove it before this all happened I didn't hear that growling whine. The additional symptom today is the truck won't idle forward, its catching then when you press the gas the wheel pops and continues for 4 or 5 revolutions then stops but the catching issue is still there if that makes sense
Thank you for taking the time to provide this informative aritcle.
Today I took my car to the mechanic to have the brakes replaced and I was told about the wheel bearing and it made sense to me because I had been hearing the noise for a long time on my 2004 Infiniti FX 45, but I thought it was the tires making the noise. Is the wheel bearing considered wear and tear? I bought an extended warranty thru my insurance company since I bought the car used, but the insurance doesn't cover wear & tear.
If I don't have a press would it be easier to just buy the hub instead of the wheel baring?
Hi Eddie - I have a 2006 Honda CRV. About 2 months ago, I took my car in for service -- to have my tires rotated. After this service, I noticed that my steering wheel would shake really bad when I drove above 50 mph on the highway. Also, there was a very loud grinding noise that I had not heard before. I took the car back to the Honda service center and they said the technician couldn't find anything wrong; but suggested that it "might" be a wheel bearing problem. They also said that it would cost over $400 to fix it; but they can't promise me that replacing the wheel bearing would solve the problem. I told them that I would be in touch and I left. I don't want to spend over $400 on a hunch! I did notice that the steering wheel was no longer shaking like it had been before. What do you think about all this? I'm at a loss and I'm really disappointed and frustrated. I purchased my car from this Honda dealer 5 years ago; and I have rarely missed a service appointment in those 5 years. Now, I'm feeling very distrustful of this company -- seeing that I didn't have the problem before I took my car in to have the tires rotated; but now I have a problem that will cost $400 plus to fix. NOTE: The Honder service technician agrees that my tires are fine.
Great article. That noise was driving me crazy! I don't plan doing this job myself but at least my Garage will not be able to bamboozle me. Incidentally the noise was loud enough for me to know it was the back wheels.
Hi Eddie
My car started with the noise you have explained last week and today I have taken it to the garage to fix it, but they told me that the parts have to be ordered and are not sure when the part will arrive. I drive 140 kilometers a day from home to work a return trip. I just want to know if it will be safe for me to use this car from now on until the parts have arrived, which I am assumming that they will arrive next week.
Hey it's Britney again, i got both wheel bearings fixed because they say if one is damaged you should fix the other also, so thats what i did and there is no more noise and the drive is a lot better. I noticed now that my car is shaking on the interstate though? def didnt do that before?! lol, Ya think it's maybe the alignment out of wack?
BTW, everything is running fine since the hub was replaced. No catching, no noises.
Thanks for your article. Wish I had read it BEFORE I replaced my tires. Does bad bearings affect gas mileage? Seems like it would. AND thanks for mentioning not to let them "upsell." I have an appointment Monday to get the bearings fixed.
Hi Eddie
I replaced the 2 front wheel bearings of my Nissan Xtrail in Jan 2011 (41,000km) at Nissan's workshop. Now, April 2012 (53,000 km) they say the bearing needs to be replaced again saying that its because of my low mileage, the bearings are worn out. Sounds absurd to me. What's your take on it?
What are the possible causes of bearing failure and how often does it happen in city driving conditions?
The workshop is our country's only Nissan Dealership.
I actually got an inital assessment from another workshop which said it was a wheel bearing problem. The Nissan Dealer just confrimed it.
Even my observation tally's with the symptoms/sound that you described in your article (great article by the way).
Anyway, my problem was why only after 15 months (12,000 km) the problem is back. You're right about bearings lasting a very long time, my 1990 Honda Accord which if memory serves me right never had its bearings changed.
I managed to confront the Nissan Dealer service manager, he said the bearings are rusty and the best help is a 50% discount on the total bill. Putting things in perspective, that's a minor issue.
My main worry is what if it happens again soon. I need to find the cause. Could prolonged driving with faulty shock absorbers cause the bearing to fail?
Thanks Eddie.
Education/information helps a lot and gives you confidence (esp with rip-offs in the motor repair industry), thanks a million Eddie.
Does my astra sxi 52 plate have 4 wheel bearings or just two. thanks margaret
I was told that I needed to replace my wheel bearings on my 2004 Buick Rendevoux because when I step on my brake to slow down, the front of the car has a slight shimmy and I can feel it on the steering wheel when I slow down to get off the highway onto an exit. Did I get the right information?
Im glad to know my mechanic seems like he can be trusted because this helped me follow up on what he said was wrong with my car and he is exactly right. Your knowledge and information helped me learn somethings about what it was and what needed to be done... and the actual footage was really helpful! Thank you.
What could happen if you don't get it fixed right away?
I,ve just been told my front wheel bearing drivers side needs replacing.The car is a vauxhall astra 2010 its only done 34K miles and still under Vauxhall,s 3 year manufacters warranty,this seems very soon for it to go what do you think ? it doesn,t bode well for the rest of the car.
Thanks eddie lets hope everything else is fine then because apart from this problem the cars been ok at least it puts your mind to rest when you speak to someone who knows what their talking about once again thanks Phil.
Question on determining on which side the bearing is bad.
When I turn to the right, the noise diminishes, nearly goes away. When turning to the left it remains. Does that mean it's the left bearing that needs replacement?
I listened to your video and that's the noise exactly. I gets worse as speed increases, much louder.
Hi-
Your article and comments have been very informative, thank you. I have a Dodge Dakota (1998) and just found out the front right wheel bearing needs replaced. Should I replace both? The mechanic only said the one and he already wants $600 for that, ouch. I'm going to call around for other prices but I wanted your advice first. Thanks
Great presentation! I am an engineer, and thought you have done a great job of explaining some technical aspects that many may find hard to comprehend. This is a virtual "bible" on wheel bearings.
Cool gogreentips, I'm glad you found it easy to digest, thank you for stopping by :D
Honda Element, 2005, 4wd, sounds like cards are in the bike spokes noise...but its sporadic. can't seem to find a pattern at all...is it possible it could still be a ball bearing issue? its definitely coming from the front passenger side.
I'm tempted to bring it to you to figure it out!!! the mechanics have checked the breaks, tires, all the cables are tight....it started when we hit a big pothole one day. there's no consistency, it starts at about 20mph and then the faster the car goes, the faster the "card in bike spokes" sound is, until its like a flutter....then when you decelerate, it gets louder and louder.....and slower and slower until you come to a complete stop. by that point everyone is looking at our car because the noise is soooo loud, more like ca-clunk, ca-clunk. there's no pattern to when it starts off, we can go two weeks without a noise and then its like an every day thing....I've gotten underneath to look for "caught" things....but no luck :(
Hi,
I took my car in for an oil change and tire rotation and the mechanic noticed something funny about my front tire when he spinned it..it was making a noise as you described so he took it for a drive and came back and said the wheel bearing needed to be replaced and it would be cheaper to buy the whole hub assembly than trying to press out the hub because there could be damage..unbeknownst to me, i had no idea I had a bad bearing but they knew I was taking a trip with my car and they said unless I got that fixed, they would recommend not taking the car on this trip. It cost more for the labor than the whole assembly but I'd rather be safe and I read all your articles and it seems that they did the right thing. Thank you for posting your articles..they ar every informative...I have a 1999 Saturn SC-2 with 203,000 miles and it has been a great car..I take care of it with oil changes, tire rotations etc.



















shindokwan 6 months ago
Thanks for the input on the wheel bearings! I have a 2000 ford escort and I think this is my problem. It gets louder the faster I go til about 50MPH which is the loudest, it actually gets a bit quieter faster than 50. I plan on doing the work myself and was wondering how hard it is to get the old bearing off of the hub to install the new one. I am aware the new one needs to be pressed into the hub but how do you get the old one out?