Axle Alignment.
A friend of mine just pulled his brand new Jayco down south for the winter. He had one tire blow out, and unusual wear on the other front tire. The wear was like it was under inflated (but wasn't.) Hi...
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Super simple check: Tie off a string somewhere closer to the centerline of the trailer than the wheel exteriors. At axle height, pull the string around the outside of the nearest tire while keeping it snug. Go past the tires and move the string so that it just touches the outside of all the tires. If it doesn't touch the outside of all tires at just the same time, then your axles need to be aligned. It can then be a mounting problem or a bent axle problem. Shops that align big rig beam axles can fix you up.
