I'm going to thread jack this post too. I just bought an 08 M3 with CCC this weekend. My car also didn't include the adapter. I have one from eBay on order as well. I tried just a plain apple cable and the system says my device (iPhone 4s) is not supported. I don't know if this is because the iPhone isn't supported, the system is busted, or because I have to use the OEM BMW adapter. I was hoping the apple USB cable with a separate 8mm male-male jack would also work.
When I plugged the iPhone just via the aux in, I get some awful alternate whine or engine noise. I have 2 months left on the factory warranty so I'm having the dealer look at it today since I assume is should sound clean with the 8mm jack
*UPDATE*: The stock cable on eBay works and there is no more ground/alternator noise.
Last edited by djseto; 08-30-2012 at 03:42 PM.