I am starting to build up my truck into what will eventually be a more off road capable machine. Right now I have the stock wheels and rims. Am I correct in having heard that the biggest tire you can fit on the 15 X 7 is a 31 X 10.5? If I was to get 16 X 8 steel rims would I be able to eventually fit 33 X 12.5 tires on them? Also what is the most trusted All-Terrain tire around. I here that the BFGs are really reliable but I want to know what the best for tread life and the ability to go off-road whenever. In general just describe your current setup and experiences. Thanks for any help.