As per my mechanics research there was a sleave in the earlier ones and behind the lug nuts small cracks would form.I HAVE THIS ISSUE. This "sleeving" was omitted in the factory replacements (provided only to the original owner of course). If anyone has a set of rear wheels that DONT have issues I'd of course be interested. Bill @ nodripsallowed@aol.com THANKS!!
Purchased parts from a metal fab shop that I believe offered a replacment - will look in my file - PM me