We really have not seen tire wear to be an issue that required rotation unless there were a problem on spring axles. The tires do not float on a suspension as they do in a coil axle or a swing arm front turning wheel. The spring axles hold them straight and true. If there is wear there is another problem, that is possibly multiples. The largest factors we have seen are drive up window wheel impacts. These bend the spindles and really cause tire wear. Any I Beam alignment shop can straighten an axle with the proper caster and camber. Axles are straight along the horizontal plane, though they are not on the vertical plane. It equates to an approximate 1 1/4″ out at the top for proper alignment, though you can not check it on the frame without equipment easily. You cant just measure the wheel and tire with accuracy, though you can estimate with rough measurements. The newer torsion axles are more of a problem in that respect. Which is another reason we never really liked the torsion axle set up. The axles can move not on all rotation to any angle and the rubber inserts regulate that movement in their durometer which can vary. There are variables in the torsion axles that require tires to be rotated. Obviously we prefer spring axles, though quality springs were a challenge for trailers with the cost being a challenge. Too much manufacturing is being shipped overseas and we have to start bringing some of it home. BCB
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