FORD 2011 E-450 v.2 - Manual (Page 181)

RECREATIONAL TOWING
Follow these guidelines if you have a need for recreational (RV) towing.
An example of recreational towing would be towing your vehicle behind
a motor home.
In case of a roadside emergency with a disabled vehicle, please refer to
Wrecker towing in the Roadside Emergencies chapter.
These guidelines are designed to prevent damage to your vehicle.
Do not tow your vehicle with any wheels on the ground, as vehicle or
transmission damage may occur. It is recommended to tow your vehicle
with all four (4) wheels off the ground such as when using a car-hauling
trailer. Otherwise, no recreational towing is permitted.
Tires, Wheels and Loading
181
2011 Econoline (eco)
Owners Guide, 2nd Printing
USA (fus)