This is typically where most tire threads end up when the OP dosn't tell us what size tire he need or was OEM on his trailer. The OP tires may have been a 14" D tire at 2040 lbs capacity or a smaller size 15" C tire.
JMO but this is a typical case of using the wrong brand ST class tires.
I recommend some ST tire brands like the Providers.....or the new Endurance.....or the new Carlisle HD in that order for trailers that see little long run road service miles. These are the new gen higher speed rated ST class tires.
Older Marathons....older Carlisle radial trails and other brands the OP mentioned work better on lawn service trailers that see little to non long run highways miles (600-1000 miles a day after day).