I’m on my third set of Carlisle radial trails. They’re 10 ply, wear evenly and run cool at around 65. I’m not sure about truck tires on a TT, some say the side wall on the truck tire is not stiff enough for the squirming that trailers inflict. Just don’t know but you might want to keep it in mind. Had you run over something while towing? Maybe a curb or a really nasty pothole? That damage can hide for a while. If your trailer sits for months at a time that can also cause problems. Keep them inflated to 80.
Good luck!