you forgot to mention what gears you are running, since that is the most crucial part espacially if you wanna run big rubbers.
I just ask myself "Self? Will you wish you had got those shiny 39.5's instead of the 37"s in six months or less time?" Most wheelers develop a nasty case of Big tire envy. I run 35's and wish I had 37's, SO I just lowered my truck to make the 35's look meaner!
Iroks kick arse though.
X2 4ds is where its at! I bought 36x13.5 irocks and now I wish I had 40s although the 36s are plenty. For an all around tire anything from a 35 to a 37 will get you in more jams than you could hope for, while keeping breakage to a minimum. (with longs of course)
