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      08-14-2011, 10:53 AM   #23
blschaefer1
Former '07 M Coupe Owner
 
Drives: 2012 Z4 sDrive 35i
Join Date: Jun 2011
Location: San Diego Area

Posts: 160
iTrader: (1)

I have a 2012 135i, 1700 miles, no issues whatsoever.

I do notice a rattling-type noise at cold startup. My prior M coupe did something similar. Did some research and discovered it was normal and related to the VANOS variable valve timing mechanisms prior to getting fully lubricated at cold startup. I can't hear your clip, but my hunch is that this is the same and probably normal for N55 based cars.

Last edited by blschaefer1; 08-14-2011 at 11:04 AM.
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