One set will always get scuff wear, but that is more dependant on the axle load at the time. On my trailer, unloaded, that is true, the front ones skid through the turn, but loaded, there is more weight on the front axle and thus, the rear ones get dragged along for the ride.
More often than not, from simple observation at intersections, triple axle box trailers show the rear axle getting dragged around the corner.
I did entertain the duelly axle solution when this trailer was built, but I had 2 6k axles already so it was only adding a third one and the spring hangars. Doubles would have been a far better solution, the frame rails could have been pushed in making the "box" stronger.
More often than not, from simple observation at intersections, triple axle box trailers show the rear axle getting dragged around the corner.
I did entertain the duelly axle solution when this trailer was built, but I had 2 6k axles already so it was only adding a third one and the spring hangars. Doubles would have been a far better solution, the frame rails could have been pushed in making the "box" stronger.