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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 05-16-2010, 04:46 PM
JR1989 JR1989 is offline
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Location: Michigan
 
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Mein Auto: 2000 323i
1989 325i rear end noise

I have a 1989 325i with 170,000 miles on it, when I go faster than 40mph I can hear noise coming from the back of the car. When I hear the noise the car doesn't begin to shake.
Any ideas what would cause this?

Last edited by JR1989; 05-16-2010 at 04:53 PM.
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  #2  
Old 05-16-2010, 04:55 PM
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lordofthewaters lordofthewaters is offline
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What kind of noise? A whining? A whirring? A clunking? A knocking? There are many different sounds that can come from back there.
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Old 05-16-2010, 05:00 PM
JR1989 JR1989 is offline
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Excuse me for the lack of detail, the noise that I hear sounds like a loud low pitch hum. I thought it might be the tires, but if it was the tires then I would think that I would be hearing this hum all over the car instead of just in the rear.
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Old 05-16-2010, 05:17 PM
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lordofthewaters lordofthewaters is offline
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A humming could be the diff (it is a 20 year old car) or possibly a wheel bearing. Jack up the car and spin the rear wheels, you can usually tell if it is a bearing this way.
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  #5  
Old 05-19-2010, 03:45 AM
Billwill Billwill is offline
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Mein Auto: BMW E30 318i 1991
Could be diff or tires or bearings or CV joints but CV joints normaly dont humm but more a clucking noise...and escpecially in corners.
Drain your diff and fill with the correct amount of the correct oil...you may be lucky.
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Old 05-19-2010, 04:25 PM
thecushion thecushion is offline
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Wheel bearings for sure. Groton import parts " 1-877-634-0063" have them for $65 shipped "for the pair" and they are German bearings. Hope this helps.
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Old 05-20-2010, 02:34 AM
Billwill Billwill is offline
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Quote:
Originally Posted by thecushion View Post
Wheel bearings for sure. Groton import parts " 1-877-634-0063" have them for $65 shipped "for the pair" and they are German bearings. Hope this helps.
Stupid question probably but are these $65 bearings only the bearing in which case they have to be pressed out or are they the whole hub assembly with the bearings installed?

Reason I ask is that for both front and rear bearing assemblies, if you have ABS on your car then you need the right assemblies that have the grooves that activate the ABS pickup sensors.
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Old 05-20-2010, 12:08 PM
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lordofthewaters lordofthewaters is offline
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Rear bearings are only the bearings, no hubs. You reuse what you've got if they're in useable shape. Fronts come with the hub and bearing as a whole assembly.
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When a man talks dirty to a woman, it's sexual harassment. When a woman talks dirty to a man, it's 3.95 per minute.

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Old age and treachery, will always overcome youth and skill.

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  #9  
Old 05-21-2010, 01:02 PM
greasygas greasygas is offline
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Mein Auto: 1988 325i
I had same thing ..thought it was was the pumpkin but left wheel bearing is what it was ..lots of fun ! do it your self yet ?
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  #10  
Old 05-21-2010, 06:23 PM
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eieio4tn eieio4tn is offline
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Mein Auto: 1987 325is
so on an IS (since it is 4 disc) the rears come as a whole assembly too?
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