Currently, I have 225/35/19 on 8.5J ET45 - no rubbing and lowered as much as possible on coilovers. Previously when I had 235s on the back they did rub quite a bit. One thing to note, my arches haven't been rolled. I'm not sure how much that would help though.
...... I have gloss black alloys and although they may not float everyones boat, they sure look better than they do in any picture 
I am gonna order some 225's
If I get em sooner rather than later I will still get a decent price for the 235's I have on at the moment. They have at least 7mm tread probably 8mm, so they should sell quick.....even though they are Kuhmo's
Also I know what you all mean about the black wheels. When I took em to my local tyre fitter, he said that he thought I had made a mistake powder coating em. He changed his mind once the tyres had been fitted and they were back on the car. He was stunned how good they looked in the flesh so-to-speak.
The powder coating is a great finish, and they will serve me well as my winter/track wheels.
