I have 2006 chev silverado 2500 hd - just put on a set if michelin 265 ltz and love 'em. Much quieter, smoother ride and better mileage than the knobbies I was running before. I also have a 40 hp boost chip and these michelins stick like glue..... funny, they sure dont look like they would grip when I stomp 425 hp but they barely chirp. The old knobbies would break loose when I glanced at the loud pedal but the michelins are MUCH better. Even in the snow / ice going over the pass last week no problemo. I bought the michelins from Tire Rack and had them installed locally. The set of 4, including tax, mounting, valvrs, etc totaled less than a grand.