If your happy with Style 65 (and agree they always looked well on M-Sports) you could always pick up a set of OEM's probably with tyres for little money as plenty of them being broken now on done deal. Get them refurb'd etc.
My Fav rim for the E39 is the M5 style 65 18"s Staggered OEM rims, after that in an 18 I'd be after the split look style 42