Hey guys. I have an '80 GMC with 4" suspention and 3" body lift, with bushwaker fender flares. The truck came with worn 38.5" superswampers, and they fit fine. Right now it has 35" procomps on it, that look a little small for the truck. I'd like to upgrade my wheel/tire combo to the maximum size I can run on this truck. I like the idea of a 40" goodyear MTR on 17" wheels, but will that fit my truck? Any other tiresize/wheel size combos that would work. Remember, I want it to be the tallest possible and still keep a "street" tire. I don't do a lot off offroad, but I do some. Mostly the truck is for towing. If I can't fit the 40s on there, what would i have to change on the truck to make it work?