Originally Posted by E90Fleet
Parts system confirms my thoughts, only showing the Audio button one for the USA E92 LCI M3, but showing the M button one available on the Pre-LCI model
E90 LCI USA model M3 on the other hand shows the M button
Trust me, if you look at the vast majority of pre-LCI M3s, you'll find M buttons everywhere because the Tech Package was so heavily ordered, pretty much except for people who didn't want iDrive (usually because they didn't like the way it made the dash look and/or didn't think it was worth it). Take a look at M3 pics on any US used car listing website and see for yourself. After LCI it was BRIEFLY still optional but when September 2010 production started it became standard. Personally I think it should've been standard from the beginning. If an M button exists, it should exist on every example of an M car.