I am due for a new set of tires at the end of the year (funds permitting). I have run 32's in the past and I think they are a good fit for the truck. I liked the look and the MPG did increase slightly. I do have a set of those cheaper black steel wheels in 16", but I am not sure I want to put them on my truck, even though there are more tire choices in 16" (15" has a limited choice of tires).
That said, I think sticking with 15" with a 32X11.50 BFG AT is a good choice.
That said, I think sticking with 15" with a 32X11.50 BFG AT is a good choice.