I have a stock 2004 Ranger Edge 4.0 auto. I went up in size from the stock 245/75R16, to 265/75R16. I went with Kumho Road Venture MT's. They are awesome looking tires, and pretty quiet for as aggressive as they look. I did notice a slight loss of passing power on the freeway, but otherwise everything seems normal. The speedometer is almost perfect now (was off with stock tires). My complaint is that my city mileage has gone to crap. Anyone else have this happen? It seems like the shift points are off or something. Any suggestions?