We tow with a 2016 RAM 2500 6.7 diesel. I have towed with Fords F250 Power Stroke and Toyota Tundras. My experience with the RAM so far is very good. The Cummings diesel is rock solid and pulls well. The 6.7 4WD is rated at 23000 lbs towing capacity. We have a tow behind 32 ft hitch to bumper and hardly ever know it is back there. We live in the central valley and cross the ridge route often. There are two steep grades and the truck handles both the up hill and down very well. The smart exhaust break is a feature that I really like in the mountains.