Quote:
Originally Posted by Tag
I don't have an M2 (yet) and have never heard the noise other than listening to the video, but this appears to be a plausible explanation. If a subframe bolt was loose and there is flexing it would cause the bolt threads to rub as it traveled up and down. That would explain the soda can crunch sound.
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No, it's a very peculiar metallic crunching sound. Hard to describe. But once you'll hear it, you'll know straightaway. Pretty loud, especially if it occurs when your windows are rolled down.