The one tread looks like chunks are coming out. Other tires are wearing ok. Any Ideas on what is causing this tire to wear like this. Possible bad tire or axle.
We had the same wear pattern on a previous 5th wheel toy hauler. Turned out that our pin weight was too light causing the trailer to sway back and forth ever so slightly. Not a handling issue as it was so slight but we had chunks exactly like yours. Load was reconfigured and tires wore perfect after that.
First thing that comes to mind is if you're making a hard turn, say, into storage or your driveway, and doing it more than any other direction. Especially if you're on pavement. Other than that, I can't really say.