Im looking at my trailer tires and the inside half is wore down more then the outside half on all four.
I talked with a trailer shop and he said they need to adjust the camber and can rebend the axles.
I have alot of miles on these tires(carlisle's) and wondering if it really needs done? Or do I buy new tires and go with it.

unless you see your top part of the tires leaning inwards, if they are then you may be overloading the axles..because the wheel base of trailers are so short try to avoid making sharp turns while going around corners,take both lanes if you have to.. The same goes for backing up, i would just replace the tires and monitor them.. When you have your tires replaced and when the trailer is on jack stands with no pressure on the axles put a bubble lever on all 4 wheel hubs and see if they are straight..also check the leaf spring bushings for ware if they are leaf's.