Years ago we had a Samson truck tire that places like grain elevators or feed stores and agriculture stores sold to ranchers and farmers. They were a low cost 40k mile tire. I haven't seen any in years and I don't know if their the same tire. I had a set on a old clunker truck on the place that didn't make long highway trips. Didn't have any issues with them other than they wore out fast. Actually they were the old bias ply truck tire.
Thoughts ??
From what I can tell your super lite Jayco may have a 10700 GVWR. The trailer sure doesn't need a 14 ply tire at 110 psi and 3700-4000 lbs of capacity.
My 11200 lb 5er has 5200 lbs axle and BFG Commercial T/A LT215/85-16 E at 2680 lbs. Ran the first set for 55k miles and now have approx 40k on the second set. Zero issues.
I would go with a LT E at 2680 or 3042 lbs capacity. Several good usa brands out here with proven track record on our trailers.