The problem isn't the tire brand but the tire type (ST).
Upgrade to a LT235/85-16 E @ 3042 lbs capacity if you have 6k axles on the trailer and want 40k-50k miles of trouble free use from tires on your trailer(s).
If your trailer has 7k axle the Goodyear LT235/85-16 G614 G load range at 3750 lbs @ 110 psi.
Or the Sailun S637 commercial grade all steel ply carcass specifically designed for a trailer applications in a 235/85-16 G load range at 3750 lbs capacity at 110 psi.
Your present wheels won't carry any more weight so the capacity will work. However they will have to be able to take 110 psi if your going to take advantage of the G tires reserve capacities. You sure don't want to derate the 110 psi tire down to 80 psi and loose its advantage.