I have Hi Run ST tires on our 2015 Heartland Prowler . . .
I bought them for our 2013 Heartland Trail Runner when we had the axles, springs, and all five wheels and tires replaced on it.
The shop that did the work for us also builds heavy duty utility trailers and puts Hi Run tires on every trailer he builds . . .
He highly recommended them, so I thought I'd give them a try.
The next weekend we took the Trail Runner to the Colorado HOC Spring Campout at Cherry Creek, and while camping there that weekend, we traded in the Trail Runner for the Prowler!
The Prowler had BlowMax tires on it at the dealership, so I had them put the Hi Runs (with only 80 miles on them) on the Prowler and the BloMax tires on the Trail Runner.
We've got under 1000 miles on them right now, but so far they seem to be flawless!
I'll be putting them to the test in February when we go to the Arizona HOC Tucson Rodeo Rally!
Here they are on the Trail Runner at the repair shop when I picked it up and the following weekend at the Cherry Creek HOC Campout:
And, of course, now on the Prowler in my sig photo!