What caused the axle problem on your trailer? And how old were the trailers when the problem occured? Did you maintain the wheel bearings?
I believe that the axles were bent. I was told that I hauled my very heavy one horse in the back and I should have loaded him over the axle in the middle. The first trailer was 3 years old, the second one two years old when it happened. I had the wheels packed and the trailer serviced every January.
