gp thanks for the help the 255/70 i beleive i am going to go with or would you go with 265/70?
Regarding tire size, it depends on what your goals are...ground clearance? wider stance? Both?
Stock is 245/65/17 which is 29.5 inches diameter
........... 255/70/17 ....... is 31.0 inches
........... 265/70/17 ....... is 31.6 inches
........... 255/75/17 ....... is 32.0 inches
In my case, I wanted to go as tall as possible and I didn't care about a much wider tread so I went with the 32's and I had to trim the wheel well.
But these are small differences in height. The additional lift that the taller tire gives you is half the diameter increase (the radius). For example the difference in clearance between the 31 and 31.6 is only 0.3 inches.
One advantage of going with the 255/70/17 is that you probably don't need the wheel spacers and that would save you $200. And you could always choose to add them later. And the 255/70's are a nice bump up from stock.
Let us know what you decide.