The 2015 Ford F-450 will up its maximum towing capacity by 6,500 pounds for a class-leading 31,200 pounds; gross combined weight rating increases by 7,000 pounds to a class-leading 40,000 pounds.
Read more: http://www.dieselpowermag.com/news/1403_2015_ford_power_stroke_440_hp_860_lb_ft_of_torque/#ixzz2vBlWhV00
When reading these numbers, I keep thinking of the guy that buys this truck to tow that much weight without any towing experience. Bringing 40,000lbs under control during emergency braking can certainly be a white knuckle experience. Are HD pickups quickly approaching the limits of conventional car/pickup licensing?