Not that uncommon unfortunately. I have talked to several owners that have had about the same luck at 60k. I have done the above, plus the typical spark plug and coils under warranty. Transmission replaced under warranty (reverse synchro failed). Timing chain stretched and the vanos timing was off enough to throw a code. Here is someone who actually threw a chain.
https://www.1addicts.com/forums/show....php?t=1352567
Here is a similar recall:
https://www.bmwblog.com/2015/10/28/b...2014-vehicles/