ALL wheels wearing on one side with scuffing

I had this problem last year with the enclosed trailer I had. It got worse and worse over time and when I was on a trip to N.C. the spindle broke. I was just barely able to get it to a shop and have the axle completely rebuilt. Even the other side that didn't break was starting to go. The main part of the axles still had its arch, however where the spindles were welded were starting to fail causing negative camber which creates severe inside tire wear. Negative camber is great for most race cars who participate in road racing, not so good for trailers. You really want zero camber on a trailer.