Help me understand this bolt pattern!

I once had a set of wheels that were off by a few millimeters on the lug holes. So I filed them to make them fit. They worked great, then I sold the truck a while later and the guy who bought it snapped all of the studs on the passenger side and blamed me for ovaling out the holes. I never did believe that. But if it were true why would they sell wheels with oval holes? I think you just answered a many years old question. Haha