When we traded in our 2013 Trail Runner two months ago, I had just put brand new tires on it two weeks before and they had only 80 miles on them when I dropped it off at the dealership.
The new trailer had BlowMax tires on it, and since they were the same size tires I had the dealership swap them out.
Cost me $200 . . . but a heck of a lot cheaper than having to deal with blow outs down the road.
I will say that the Trail Runner had BlowMax tires on it (still have them stacked on my deck still mounted to the original wheels), and I never had any 'tire' problems with them.
They have around 5000 miles on them.
As for my old Trail Runner, the BlowMax tires that are now on it might just be good tires on it as I had upgraded the tire size from a 'C' range to a 'D' range tire (which is why it also has five new wheels as well) . . . but I guess I'll never know as it was sold two days after it hit the dealers lot.