I just added a set of 225-40-18 to my MS3. So far I like them. They are very quite..much more than the stock tires, seem to handle well and the 225 size looks better.
Sorry for the month later reply, haven't been on here much. No the 235's don't rub at all because I got 235/40's instead of 235/45's. That half an inch of height made the difference.