We just leased a 2018 F150 and like most everyone, we would like to put on aftermarket wheels and tires on the truck. We figured we would just keep the stock, but when at the dealer we asked about this…
The dealer stated that because aftermarket wheels and tires are so common on trucks these days, Ford does not care if you return it with the aftermarket wheels and tires so as long as they have acceptable tread depth.
I installed a level kit on my Leased F150, kits are cheap enough I will just keep it installed when I turn it in. Doubt the inspector will even notice. Wheels are a different story, I don’t care what the dealer said, I would probably not send it back with aftermarkets. That would be a hefty bill if they charged you full retail for dealer installed tires and rims.