Originally Posted by OilnH2o
I also have a pic of just one of the old tires - severe wear on the outside edge - and found both axles have a slight bow in them, almost as if they had been used as jacking points in the past (and maybe are thus putting a "toe-in" on the tires? All were worn similarly). I think that's the next project!
That picture looks like the camber is not correct.
A toe in would also have a feathered edge at the worn areas. It may have and the pic is not that detailed.
Under inflation should show wear at both outer edges of the tire.
Out of balance (and to a lesser extent bad shocks) would show up as a cupping. It could be anywhere on the tire even the place where that wear shows up. And the worn areas would not be even around the circumference.
All Airstream axles have a bend in the axle when they were made. Just because the axle tube has a bend in it does not mean the bend is causing that issue.