In the course of trying to get my trailer to pass inspection I have found out that Load rite hubs are different than the average over the counter hubs. Does anyone know how I can tell what size I need. The trailer depot has both hubs and they are identical except one is a 5.5 outer and one is a 6.5 outer diameter. The number of lugs, lug pattern, bearing and journal size are all the same. The hubs I have are so rusted I can't tell what the original size was. Just the surface where it is bolted to the rim is different size what can I do?