I run 35"x12.5"x17" Kumho MT71 (mud) on Dirty Life DT1's with 3.73 gears. I still still 8th, yes not as often. Mileage ranges from 19.6 mpg down to 14.7 mpg (winter). My commute is 30km each way daily...mostly flat. No probs in mud, or snow for that matter. I tow occasionally as well.
I really...
I was next to an Earl JL Rubicon yesterday in the wild. With the overcast skies, it had a greenish blue tint to it.. Neat colour, still not sold on it.