There is an issue with the black satin coating BMW used on many of its plastic parts. I had my steering wheel trim replaced because of this. It will be covered under warranty. Let your dealer know. Check your other trim carefully too.
My garage: 2013 BMW 550xi GT, 2007 BMW Z4 3.0si Manual, 2006 BMW 530xi
Retired: 2007 BMW X3, 1998 BMW Z3
Member of BMWCCA!