UPDATE- So the tires that were on the RV were " Val Sport LH99". They have 6 nylon cords in them. A quick google search shows a recall in a tire size similar to mine (but not the same exact size).
Anyway, I ordered Greenball Trailmaster tires (I know they arent the best but even they have 4 nylon cords plus 2 steel cords). I also discovered that none of my previous tires were balanced when the trailer was sold to me new. So I balanced all of the new tires, installed them and checked/greased the ball bearings while I was at it.
I have a 1500 mile round trip to the outer banks, NC in June. I'll post an update after the trip.