The new rims will also be wider than the oem rims, hence the need for more backspacing. I've heard of guys saying you can't use any more than 3.5" backspacing, but I didn't have any trouble. Right now I have 225/75/16's mounted on the truck. They fit real nicely. They are only about a 1/4" shorter than the oem 7.00/15's and the footprint is only about 1/2" wider. I have a set of 245/70/16's that came off of my Trailblazer, they are noticably wider, but about the same height as the 225's. I may just put them on the rear though. I don't how they will be with the armstrong steering. For easier steering some guys like the 215/85/16 tire, the only bad thing is that they only come in a kidney busting load range D or E.
Checkout
www.photobucket.com/whitedog76pics ; I have some rim and tire comparisons. The 245's aren't mounted on a rim and inflated, so they appear a little shorter in the picture.
