Help - vibrations from front end on new 14s not there with the 13s on

Those wheels look real interesting on your early A, and makes it pop. My 65 C-body drove similar, with an up-down wobble at ~10 mph, but ran much smoother at highway speed. That was after an accident where it slid sideways down a hill and must have bent a wheel. Drove smooth after changing to alloys. I doubt you could bend those alloy wheels, since they would crack instead. Your axles could be bent though. After you measure the center hole and hub register, if they don't match search ebay for "hub-centric rings". Those are nylon and take up the gap. If you find one close, you might sand it to get exactly right.