I should have my Velocity Motoring v710s by next week. They are 18x9.5 with an offset of 22 and can take a 275/35 tire all around. They are nice looking wheels; a little bit heavier but I'm not so sure I want a really light cast wheel. Unless you are in a hurry we could get together after I install them next week and you could check them out. My total cost with shipping was under $1000.
You could also try TCKline as they carry TRM Motorsport wheels and when I talked to them last they had 4 wheels 18x9.5 with an offset of 35 which of course would require spacers.
2015 f80 M3, 2016 GT3