Going to be putting a 4" suspension lift on my 79 K10 and I'd like to know if there is an "ideal" width. I plan on running 33's unless I get a killer deal on some 35's and can't decide between 10.50 or 12.50. For instance, I'm considering BFG AT's which come in 33x10.50x15 and 33x12.50x15. Also in the running are Dunlop Radial Mud Rovers..but those only come in 12.50 width. Any insight as to which would be better and why?