Hi I have dual axle 30 foot tt right rear tire wearing more than the other 3 from outside to inside on tread original Chinese tires bent axle or bad tire ? Tire is worn down to rubber on outside but m...
Might be kinda a PITA to do, but I would swap positions with another tire on your trailer.
If the "new" tire that is placed into the position where the one with the wear problems was and it has the same wear patterns like the one that was removed from there, then it would be obvious that the problem is an axle/alignment issue.
If the bad tire continues to wear uneven, then it's a problem unique to that tire and replace it with the spare.