Thread: Diff noise?
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      09-19-2008, 12:44 PM   #32
ericld
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Drives: 2008 BMW E92 M3, Alpine White
Join Date: May 2008
Location: CO

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Okay - So I have the same issue on my E92 Coupe. It's a "cornering at low speed" situation and I get a rubbing groan sound - sort of a humming. I hear it daily when I turn into a parking place.

I knew it was the diff when I first heard it, but for a few minutes I thought it might be a wheel rubbing in its wheel well. I also wondered if some lug nuts were loose causing a rear wheel to rock up against the interior well wall.

As a group, what have we decided? Let it be or get more diff fluid in the unit?

I have 2700 miles, but it doesn't sound like something that will go away, more likely something that will increase over time. Friction increases, it doesn't go away over time.