If this is a small boat trailer axil you can learn a little about misalignment putting tape, I like duct tape, around the tires across the tread. Any misalignment will fray the tape quickly to indicate which tire. I also believe you have already ruled out a bent rim but after identifying which tire switch sides and do it again to verify. If the problem follows the switch it is a rim problem. Personally tire wear on one tire only in my opinion will not be a camber issue. It also won’t be axil position. My guest is you have a spindle that has a toe in or toe out issue, which can easily be aligned with small effort inexpensively.


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