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      04-27-2011, 02:27 AM   #92
Seattle S65B40
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Drives: 2008 e92 M3
Join Date: Jan 2011
Location: PNW

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2008 BMW M3  [0.00]
Originally Posted by ChrisAW View Post
I had a cowbell noise that would happen whenever i would put load on the drivetrain or whenever i would come off the throttle and there would be negative load on the drivetrain. Loud cowbell/ping noise. It turned out to be the driveshaft and the dealer replaced it under warranty.
Yet another alternative source to the sound. Interesting. Diagnosis of this problem could be harder with so many different possible causes. The same can be said for recreation of the problem for service techs. Luckily when I took mine in the second time, it was continuous, and the tech knew right away what was up (in my case, pebble INSIDE RR rotor - not between rotor and heat shield).

Club 6MT
2008 E92 M3 6MT, AW/Blk Ext., brushed aluminum
2006 E46 M3 ZCP 6MT Carbon blk/blk(sold)
2001 E46 325Xi 5MT Jet Blk/Blk (sold)

Last edited by Seattle S65B40; 06-02-2011 at 04:16 PM.