I'm driving on 33s now but will be going down in size if i can lower my truck. I want to go low, not sure how low but low for sure. I know i drive an SUV and it doesn't hurt to want to get more MPGs out of it. With 33s I'm getting about 12 mpgs and would really like to achive high teens and even better if i can actually reach 20 mpgs. I don't think I'm asking for a lot but again am not sure i can achieve what I'm looking for. I'm not an aggressive driver with a lead foot. I'll let folks pass me by, what do i care. It's those idiots always in a rush that find their final resting place sooner than later. I like the way your truck sits 6K, very nice. Is your truck a 2x or 4x?