Are all four tires wearing the same way? Park the camper on level ground and get behind the camper and look under the camper from the rear and check the vertical position of the tires, look to see if the tires are tilted in one direction or another. /--\ <--- This representes a tire on the left and a tire on the right and an axle in the middle. If it looks like this take it to a dealer. And by the way
to FRF.