I had my hubs altered to accomodate 5 stud corrvette ralley wheels and the machineist found that the casting was quite far out of round from the factory.So he trued them to the bearing surface and turned them so they would be balanced. I haven't tried them but it makes me wonder about the times I had my 56 Nomad up to 140 MPH with the 450 horse 327 with a stock set of hubs and bearings, no wonder the beast used to shake and rattle so much.If I had to live my life over, I'd want a raise.