Offset is important to steering geometry. I would not get it wrong, if you can avoid it. You might try Euro-tire, a NJ wheel & tire dealer. Most of the owners/staff own or owned a variety of quattros & synchros. They might be able to help or advise from experience. Get their 800 # from information or call (201) 575-2515. Tell them I (grant) referred you. Grant gfl\cc.bellcore.com