I had the same done to my front arches, the guy said there were to many weak points in the fender to be able to do a full roll. I've got 195/45/16 x 7" on all 4 but its odd that you still rub, even though my wheels are an inch bigger, with the profiles we have, our wheel diameter is pretty much the same. My rear only rubs when I go over speed bumps too fast and when I have a full load in the back. The only thing I can think of is the offset of your wheels. Gd's don't handle low offset very well.