I have a 2012 F-250 with mini max, s&B intake fully deleted with a 4" and just put 35's on 22" fuel lethals. I was running stock wheels with 35" Toyo mt's and getting a good bit better mpg. I know the wheels and tires are alot heavier but I was trying to think of options to help improve it again. So I was thinking about new gears. Mine has the higher gears from factory. Any advice or experiences in this area would be greatly appreciate or maybe some other options.