Are you sure you didn't hit something that is tall enough to damage the fender and rub the tire?
Fire Hydrant maybe.
The fender on the front should be a few inches above the tire.
If not I would take pictures and send to Forest River if the fender got damaged or the tires. If the front springs were broken on one of the leafs it may make the rig sag down on one side.
Either way I would take lots of pictures and send them to Forest River.
Here is my latest information FR Georgetown Warrantee.
Forest River Warranty
Georgetown / FR3
It may be a FORD warrantee issue or Forest River.