Certain cars look good with it as opposed to the marshmallow look like when you put a 255 on an 8" rim like you see. I have 255/35/18s on 18x10.5s all around on my S13. It's just enough so the lip is sticking out a bit when looking straight at the tread. But on the E46 I'll be doing something a bit meatier and not tuck wheel in the rear.
I don't have pics just yet of mine but it's just like this:
