[Lucky1]

7.5 mpg sounds pretty normal with your set up to me. I'm stock height with 325/50/22's (35") and my computer says 10.7 and sometimes lower. I had a major tune up recently and it ran a little smoother but the gas mileage was still about the same. It has to do with aerodynamics which H2's have absolutely none ! If you own a Hummer then you have to pay to play.