Hi all, since I don't play in the mud I went to a snow/ice combo. I just put on the Dunlop Grandtrek sj6 215/70's on my 05 xl7. They added overall about 1 inch to the diameter, and we feel the CG has not been noticably comprimized. It looks more truck like and I also feel that any larger may look awkward in the wheel well. I am convinced that a 235/70 will rub, a 225/70 would be iffy, depending on the tire. I too feel that this size is the best choise. From experience, I will give the blizzak a slight edge on ice, but at $130 canadian vs. $198, the dunlop is a better buy. cheers..