Make sure the trailer & tow vehicle are level when loaded. If the toung is high in front that will also load the rear tires too much and cause sway and overload the rear tires and possible tire blow outs and bearing trouble. My Son has a forest river and he added a rack on the rear for a generator and pulled with a high vehicle and didn't have the trailer level and it caused both the rear tires to blow out and one wheel burned up the bearings. After he got the proper drop hitch bar so it was level the problem went away. I did not catch what kind of vehicle you are towing it with? That will make a diff