Tyres can go off. I have a 2010 D40 Navara that does the same. I can spin the wheels in the first 4 gears up to 100kmh in the wet. They have plenty of tread left on them. So I do understand.
Dunno mate. Depends if it has a patent. You can make minor variations to comply but you can still be taken to court. deepest pockets normally win.lol If its off a concept and FPV(FORD) know it was sold off, then probably no issue with flopping it.