Ford says this mother can pull 12,500 lbs. with a conventional hitch and 15,300 lbs. with a fifth-wheel rig. But that’s partially due to the limitations imposed by the mandatory 3.73:1 axle ratios in the F-250 4X4. The same engine in the beefier F-450 4X2 (with 4.30 gears) can tow over twelve tons. Sheer size masks the truck’s accelerative prowess, but try checking your speed at the end of a quickly-devoured on-ramp: you’ll slam down the (spongy) brake pedal and strain your retinas scanning for cops.