Just got back from Florida on Tuesday. Pulled a 24' flattop tandem axle with 13" tires about a 1000 miles with no problems. Was concerned because I had a flat before I even left the hotel and had to plug it so I had a spare. I also had a cap fall off and had to tape the bottom of a plastic pop bottle to the hub.
It takes a real man to drive a old trailer with 13" wheels across the county. My hats off to you. Daniel