There was a crank bearing change autumn 2008 - hard to know for sure if it was a revision for the 2009 MY or on a particular date. 2009 MY starts Sept 2008 but the revision was apparently in October 2008.
The date for the rob bearing revision is uncertain - the only way to tell is by the numbers on the bearings themselves which you see when you strip down the engine. [1]
Note though that the bearing failure rate is actually reassuringly quite low....although you'd think there would be expired M3s abandoned by the side of every road going by M3post.
Edit [1] somewhere around 2011 seems like the best guess so far.
Last edited by SenorFunkyPants; 12-16-2013 at 12:12 PM..
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