R12RTee wrote:
The casters are the way to go. I had them on my 42 foot toy hauler and they were a great addition.
The trailer is NOT suspended by the casters. At most they will take a small amount of weight from the campers tires but they definitely will not lift the tires from the ground. When determining where to mount them I place one end of a string at the rear wheel and the other end to the bumper area that will come in contact with the ground. The caster should be mounted so it is just below the string. This will minimize the weight the caster will have to support.
Casters for trailers are not "small metal wheels". They are heavy duty metal with a polyurethane coating. An example can be seen at this site: Ultra Fab caster wheel
How can you say the trailer will not be suspended by the casters? Unless you've seen the road, driveway, and the trailer you're just making assumptions.