I'm sure some of you have seen my sell post in the buy/sell. I need to get better mileage out of my truck as I'm driving around much more for work. I would just lower the truck, but I have 4.56 gears in the rear. I'd take the gears out but I don't want to pay someone $400 to do it. My question is how much overkill would it be to have these and run 35" tires? Would I even gain anything as far as gas mileage is concerned? Thanks in advance for your help.