Wow, what a great thread with great looking tips!! I will say that I have seen F10 550i people sell their tips, and that could be a cheaper possible option (however, a muffler shop would defintely have to be involved).
My issue and question:
I have a 535i that is NOT a M-Sport, thus I don't have the option to change out the rear valence to the 550i (wider tip cut-outs).
That RealOEM diagram is confusing because that illustrated rear bumper does NOT belong to a 535i.