Got the CF mirror covers today from
https://german-car-accessories.com/c...ps-g14-g15-g16 for the M850i
Found the easiest way to install them was by removing the side glass first.
One thing with the new M850i covers, this area circled in red needed to be removed. My assumption, it was there for maintaining some rigidity in manufacturing/shipping
Attached is a pdf for installing the covers and side vents