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      11-14-2012, 01:51 PM   #6
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Drives: 2008 m3
Join Date: Nov 2012
Location: United Kingdom

Posts: 12
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ok, on the way to the dealer the car started making the knocking noise when in 6th gear at lowish revs (~1500rpm) under a heavy throttle.

So I now think its the main bearings that are shot.

Will update in due course.
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