You are assuming you dont have 16mm of clearance already there though, you probably do.
No man can 100% categorically say what will fit and what wont, I can give you advice based on personal experience but things like tyre wall profile, suspension camber, degree of loweredness (new word, woo!) can all make a difference. Examples though:
18x12 ET0 with 275/35 tyre, running 3.25 degs camber:
18x11 ET 0 with 245/40 tyre, standard camber:
18x10 ET -13 with a 275/35, standard camber and arches almost certainly only rolled:
Back on the first page youve got mine as well, 10J ET15 with 255/35 tyre IIRC, standard camber, no archwork at all.