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General E46 Forum
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Old 03-06-2012, 10:12 PM   #21
dmax
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gymrat...that's almost undoubtedly wheel bearings.

Test it on a highish speed turn. The loaded wheel will 'whoop whoop' ...so left wheel on a right hand sweeping turn. If you're hearing it on a straight, it might be tires or a really bad bearing. See if you can change the sound from different direction turns.

With a tire, it could be a bad flat spot from having sat for a long while at normal or low pressure. After a couple of weeks of sitting, you can usually work it out...but if it's sitting for a long while, that flat spot might be permanently in the tire.

Still, the sound 'sounds' like bearings to me. Test it on turns and see what you get.
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Old 03-06-2012, 10:40 PM   #22
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I recently purchased a 2004 330CI with steptronic transmission and have a similar noise problem. Sounds like a woob woob noise from the rear of the car. I have the 17" M68 staggered wheels with summer ultra performance Dunlop Direzza DZ101 tires. I can see some minor feathering on the tire edges. I hear the noise above 20 mph with the speed of the oscillating woob woob increasing as speed increases. Above 70+ mph the noise either goes away or is not discernible over road noise. The local BMW dealer did a post prepurchase inspection. I mentioned the noise and after the inspection they told me it was tire noise, not a wheel bearing. They did say the alignment is likely off a bit but suggested not aligning it until I replace the tires. Any insight would be appreciated.
I have same year, model and staggered as you do with summer tires. I never have any noise like you even when my rear is misaligned or my tires nearly worn out.
Watch for INNER portion of your rears to be worn out way before the outside tread.That's the place to keep your eye on. Normal for the breed.

My car can frequently sit in one spot for 1.5 months without being moved. Never have has a flat spot issue even for the first few hundred feet.

Last edited by Stinger9; 03-06-2012 at 10:41 PM.
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Old 03-08-2012, 08:42 PM   #23
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so I jacked up all 4 corners one at a time and spun the wheels. I can hear the bearings rattling on both my rear wheels (although much worse on the right rear). The fronts sounded fine. On a couple wheels the brake pads were scraping as well, but they did not seize up the wheel, just made some noise as they were rotating and didn't let the wheel spin very freely (different than the bearing noise though.)

So I'm going to order some bearings and have at it, I guess!
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Old 03-08-2012, 08:47 PM   #24
Stinger9
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A few good wheel bearing DIY's around including the one that uses no special tools.
Good luck and let us know how it goes.



Look forward to your DIY with pics and description!!

Good Times!

Last edited by Stinger9; 03-13-2012 at 01:50 PM.
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Old 03-13-2012, 01:30 PM   #25
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Will do, ordered everything last weekend so it should be here later this week. I'll post a writeup on it w/ pics when I do it. I did buy one special tool, FWD Bearing Puller from Harbor Freight (it's really just for the drive wheels, not specifically for front bearings) for $80. More details will follow in the next week or two, whenever I have time to do it.
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Old 01-12-2013, 07:16 AM   #26
100mileperhour
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Will do, ordered everything last weekend so it should be here later this week. I'll post a writeup on it w/ pics when I do it. I did buy one special tool, FWD Bearing Puller from Harbor Freight (it's really just for the drive wheels, not specifically for front bearings) for $80. More details will follow in the next week or two, whenever I have time to do it.

Okay, what happened????? I'm having the same problem. My wheel is getting a little warm and my fuel mileage has gone down about 2 MPG on the daily commute (128 round trip).

Either:
1. Stuck Caliper
2. Stuck E-Brake Shoe or seized components
3. Wheel Bearing



I'm hoping for stuck e-brake, but have a caliper standing by at O'Riley's should I need it!

Don't shoot me because I ordered it from a chain, I needed it now! (LIttle Humor)
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Old 01-12-2013, 11:03 AM   #27
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Problem with rebuilt caliper from O'Reilly's is that it really does make a difference in longevity. A surprising number of reports give feedback that they fail soon compared to oe.

PS--how often do you cruise at 100 mph in Michigan?

Last edited by Stinger9; 01-12-2013 at 11:04 AM.
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Old 01-12-2013, 12:31 PM   #28
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Thanks I think I'll just try to clean up the caliper and buy a O-ring kit and get by for a week so I can order in some good parts
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