I just changed the tires on the stock rims on my 2500 to GOODRICH 285-75-16 T/A KO it appears to have added approx 2+ incheds in height and width with a much improved/agressive tread pattern. They do not appear to be "cupping" at all the stock rims seem to handle the larger size ok. I think I got a good deal on the tires, 165 ea installed.
Gary
Gary