Originally Posted by Bilcin
.........All 4 tires have worn down on the inside tread........................Can this be caused by to much weight in the trailer?
The answer is yes. Looking at at a new leaf spring trailer axle, with no load, you will notice a slight "crown" in the axle tube. This puts a no-load camber in the wheel/tire, slightly tilted outward at the top of the tire. As the axle is loaded, the leaf springs, being mounted inside the wheel/tire, are pushing down, tilting the top of the wheel/tire inward as the crown in the center of the axle tube is flexing downward. If the axle is loaded beyond the mfg.'s rated capacity, the axle will continue to flex downward tipping the bottom of the wheel/tire outward causing wear on the inside area of the tread.