The 17.5's were a factory option from Peterson when we purchased.
Florida is great compared to cold, gray PA.
Enjoying lots of warm sunny days here at Markham Park in Sunrise, FL. Wonderful county park with big sites, full hook up, canal waterfront, lots of activities and extend stays allowed.
The HRA was a recommendation from the tire dealer who replaced my blown Hankook TH-22 last year. I was going to use it as a spare so I went with it.
I knew I wanted matching tires on all wheels and looked into the HRA a little more since I had one. It's a commercial truck tire in many sizes but seems to be used on motorhomes and trailers frequently.
Newer design than the 901 and from my limited research got better reviews. The local tire shop said he put a lot of Hercules on trailers, priced reasonably too. I only ran 150 miles on them but the pressure and temp increase from cold was lower than the Hankooks. Talked it over with the tire guy and we started these out a little higher at 110 PSI, higher than needed is better than under inflated and running at 100 PSI might have contributed.