Just in case the regular Ford F-150 Raptor was too small and weak for you tastes.
Europeans don't always understand the sheer size of some American cars until they travel to somewhere like Texas or Arizona where big is simply a cultural given enabled by the sheer amount of space available. It's why trucks sell so well in America, and as Ford likes to remind everyone, the F-150 is the one that sells the best. However, the Blue Oval wasn't too happy that tuning shops and aftermarket companies were getting all of the money from those who wanted more out of their F-150s.
To remedy this, it created the Raptor. As impressive as it's twin-turbo EcoBoost V6 engine, beefy off-road hardware, and fancy clutch-operated transfer case is, to some people living in certain regions, the F-150-based Raptor is just still not enough.
Sadly for Ford, designer Jeremy Dixon decided to offer these customers a more intense flavor of Raptor. He founded a Tucson, Arizona-based company called F250R that cobbles together custom Raptor cladding along with a lifted suspension, new 20" wheels, the same used on military MRAP (Mine Resistant Ambush Protected) vehicles, and massive Michelin XZLs, which are classified as Military Radial tires, to wrap the wheels with. Fitting all that requires relocating the front axle a bit further to the front so the 46-inch wheels can clear the firewall, which already has to be reworked and have steel added to it to accommodate the hardware.
The F-250 can be had with 40" wheels too but the truck's name is then downgraded to SuperRaptor rather than MegaRaptor. Both are fairly mega though because an ECU tune coaxes out an extra 100 horsepower and 100 lb-ft of torque on this diesel variant, and while F250R can do the conversion on the gasoline F-250, it recommends customers go the diesel route for the extra torque. There's not much we want to see more right now than a match-up between an F-150 Raptor from Ford and the F-250 MegaRaptor.