When you graduate to heavy-duty pickup trucks, towing capacity becomes one of the most important aspects of any truck you may, or may not, buy. Most folks who buy something like a Ford F-350 or a Chevrolet Silverado 3500 HD need a truck that can’t shy away from hauling extremely heavy loads. Because of this, the Detroit Big Three spend big bucks on trying to out-do one another when it comes to engine power, towing capacity, and payload capacity.