For a reply to the OP. A couple of years ago, I bought a cargo trailer to convert to a camper.it came with the H188 tires, 2 of them. One was a 205 75 15 and the other was a 225 75 15. The trailer was 6 months old and the tires were about 10 months. The 225 had a jagged split 3 inches long from the tread towards the center. I had not noticed this at time of purchase. Went to Jim Campen Trailer Sales and Jim highly recommended to replace with radials. He sold me the Maxxis and I never had a problem. So, now I have a different trailer with HiRuns on it. They are about 5 years old and I will replace with Maxxis, because I never had a problem with them, and I can get them locally.
Tire threads are so entertaining.