Ok, so it would stick out (by 1cm, I suppose), but I might find that acceptable. More importantly, is that seemingly tiny difference going to allow the wheel to turn in its well without any rub (how much margin does one have)? Is that seemingly tiny distance going to affect the handling or any other suspension factor? The difference seems negligible to me, but I've been surprised by that type of stuff here before.
DISCLAIMER: I don't yet actually drive a BMW. Currently, I proudly drive a '93 Volvo 940, the inspiration for my love of RWD cars.