I put a set of BFG KO2 285 70R17's on my Chev 2500 Z71 diesel. They look great. I have driven them in some moderately muddy conditions (flat) while duck huntingand they perform well. They are quiet and ride smoothly. They did knock about 2 mpg off my mileage over the stock 245's. The FWC Hawk knocked another 1.5 to 2 mpg. So, I went fro 17-19 mpg down to 12-13. Now, I am considering adding a Titan tank to the underside.