Have them on my rig. little over a year old, about 8ooo miles so far. My unit weighs 17,600. Have not had a single issue with them. they still look new. Have run over curbs several times, not cuts or bruising to be seen on them. Hold pressure well, just last month is the first time I had to add any air, less than 5 psi to top them off. Check them at every stop, and they run cooler than any other tire I have had on any of my other rv's. I would recommend them.