I disagree with you both on the tire sizes. Using those sizes will increase the OD by an inch and throw off the speedometer. To maintain the stock height, go with 245/35/19 and 275/30/19. When my OEMs go, I'm thinking about going with 235/40/19 and 265/35/19 on the stock wheels. A little bigger in diameter, but not enough to really matter, IMO. However, there seems to little room in front, and I'm reluctant to going any wider than 235 in cross section. Also, at this point in time, there doesn't seem to be a good solution (read selection) as far as tire brands and models for the two sizes I have in mind.