From my owner's manual.....
Your vehicle is facing forward so that
it is towed in a forward direction.
โข The transmission selector lever is
placed in position N. If the transmission
gear shift lever cannot be moved to
position N, it may need to be
overridden. See Automatic
Transmission (page 133).
โข Maximum speed is 35 mph (56 km/h).
โข Maximum distance is 50 miles (80
kilometers).
It then goes on to say towing behind a motorhome, use the above guidelines or...use a trailer or put the front wheels on a dolly which doesn't make any sense to me as the Transit is rear wheel drive.
Google 2015 Transit owner.s manual and check it out for yourself.
'15 Ford Transit 250, 3.5 ecoboost, 3:73 ls
'12 Lance 1685