Can you help me figure out a way to fit vw beetle tires and OEM wheels on my 2003 Volkswagen Pat GL?

You don't need to modify the car. What you need to do is send them back. They gave you the wrong size bolt pattern. What VW needs is a 5x100 bolt pattern. The up size on the tires is correct. Call them and let them know they don't fit on the car and they will give you a return authorization # and then you can get the correct ones. Hope that helps you out.