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post #1 of 7 Old 4th March 2005, 08:05 PM Thread Starter
Bob Uenaka
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Rear Wheel Bearing Noise

I am hearing a low howling noise at about 20 mph that seems to be getting progressively worse. The sound does change slightly in pitch as the car is turned left to right at 20 mph. My mechanic checked it out and found a very slight amount of play in the LR wheel so he suspects it's a bad wheel bearing.

Has anyone experienced this type of problem? Any suggestions as to what I should look for other than the wheel bearing? The car has about 35k miles.

Thank you!
Bob

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post #2 of 7 Old 5th March 2005, 01:19 AM
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Re: Rear Wheel Bearing Noise

I have the same play in my rear of my 540i 6-spd, but there isn't any noise present. I do not know if the play in the rear is normal. My best guess is to check with BMW.
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post #3 of 7 Old 5th March 2005, 01:47 AM
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Re: Rear Wheel Bearing Noise

How are your rear tires looking Bob? I had some worn rear tires that sounded like bad bearings at about the same speed.
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post #4 of 7 Old 5th March 2005, 04:09 AM
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Re: Rear Wheel Bearing Noise

Check the for sale section and member ALEV8 is selling wheel bearings.


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post #5 of 7 Old 5th March 2005, 05:23 AM
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Re: Rear Wheel Bearing Noise

Quote:
Originally Posted by Bob Uenaka
I am hearing a low howling noise at about 20 mph that seems to be getting progressively worse. The sound does change slightly in pitch as the car is turned left to right at 20 mph. My mechanic checked it out and found a very slight amount of play in the LR wheel so he suspects it's a bad wheel bearing.

Has anyone experienced this type of problem? Any suggestions as to what I should look for other than the wheel bearing? The car has about 35k miles.

Thank you!
Bob
Sometimes you might have a small amount of play in the bearings and that doesn't necessarily mean the bearing is bad. A little trick to separate tire noise (like mottati mentioned) from bearing noise is to pump up the tires to about 50 psi and see if the noise changes. If it does then the tires are probably making the noise.

Is the noise in the front or the rear?

Joe
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post #6 of 7 Old 5th March 2005, 07:42 AM
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post #7 of 7 Old 6th March 2005, 06:34 AM Thread Starter
Bob Uenaka
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Re: Rear Wheel Bearing Noise

Thanks for all the input. I just replaced my rear tires with Toyo T1-S in size 285/35-18. These are the same tires that I've been on the last 10k miles. Since the last pair only lasted 10k miles and I won't be tracking this car any more, I had the rear camber adjusted from -2.8 to -1.8 degrees. The last pair of Toyos were notably quiet. I did try adjusting the air pressure, but only by 5 lbs and it didn't make any difference. I "think" the sound is coming from the rear.

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Dinan exhaust & stage II suspension, Nav TV in motion & VR, BBS RKII rims w/polished lips, 255/35-18 & 285/35-18, HID fogs, clear corner angel eyes with Umnitza LED's, Rogue transmission mounts, ceramic brake pads, brake ducts, BeastPower swaybar brackets, Euro arm rest.
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