Hello, My name is Alexandru and I have a S6 1995 2.2T. Somebody told me that if I use different size of tires I can destroy the inter axial diff. It's true? I know that the guy that sell me the car use in front 225/50/ZR16 and for the back 225/55/ZR16. Can this overuse my diff? How can I know if I have problems with the diff? If somebody can help me with a reply, I will be grateful. Thank very much.