I have noticed that the tires on my 5th wheel wear patterns are screwy it looks alot like a ball joint issue on a front of a truck on some. Others are wearing on the outside really heavy onters on the inside. Can you get a trailer alignment?

 

Sounds to me like your axles are not aligned/parrallel to each other. Also, is your tire pressure OK and are you sitting level???

 

Could a guy do a quick check by measuring from the center of the hub to center of the hub on either side. As far as level I would say it looks level and nothing out of place.

 

my 5re did the same thing.Found out all the eqs and hangers were worn bad.put all new stuff in no problem now,cost 150.