The topic is controversial.
I believe your trailer originally came with 225/75R15 load range C tires. I would suggest replacing those with Goodyear Marathons in the same size but with load range D, so that you can run them at somewhat higher pressures, and reduce the heat buildup that contributes to tire failures.
The Continental Vanco that R Carl suggests would also be a good choice.
The other tires in load range D in similar sizes are not from major manufacturers, and I would avoid them.