Here are three pictures that might help you make the decision. These are BMW promo pictures of a 4.8 with the sport package and Y-spoke wheel (214).
The front looks like it would be ok with the standard flares. The back may be iffy, but I guess you could always install the wider flares later.
For winter I installed the front all around and they are inset more in the rear than with the standard rear rim as these pictures show.
Hope it helps.
2013 760 LI 25 Years Edition