I am happy with them. I had them on my previous half ton and liked them enough to put them on the 2500. Got just over 27,000 km and shows very little signs of wear. A little road noise but that is to be expected.
You can fit the 285/60/20 Duratrac's if you don't have mud flaps. I have them on my truck but had to trim my mud flaps. They would have cleared otherwise.