Judging from the amount of trailers I see being towed down the road on 3 tires with the owner totally oblivious to what's going on behind them I would guess 95% of the tire problems I hear about are owner caused in one way or another.
I've had one tire failure on my trailers in over 40 years of towing (and that was FOD). Most of my tires were China junk according to the people on this forum. Most of my towing is done between 70 to 75 because that is the speed limit in most of the states I travel in.
I broke every rule in the book with tires except one. I always kept my tires at max pressure or max + 10.....ALWAYS. I have never screwed around with load tables and stuff like that.
This is what "I" do and have done.