The alignment of axles is the critical ingredient for tire wear (after overloading/under inflation). Even 1/16th of an inch difference between the distance form one axle to the other (measured on the spindle center drill holes) loaded and unloaded checked separately and carefully, will create tire wear. Worn bushings in the non-flexing spring eye, or a sagging spring will allow the axles to deviate from parallel. Deviation causes the pair of axles to steer the trailer (left or right) and put strain on the hitch that is translated into tire wear. Un-balanced loads (left to right) will also do this by stretching springs on one side more than the other making the axles not parallel. I built Michigan trains in the 1970s and welded many an axle mount to 1-1/2 inch thick bottom flanges to trailers designed to carry 125,000 pounds. It matters. Jim
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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