The a4 chassis cars, are 5x100. The b chassis cars are 5x112.5. So, VR6 a3
cars could share wheels with the new Jetta and Beetle. I am not sure about the
offset, but if anything, the wheels from an a3 GTI/GLX VR6 will fit a
Beetle/Jetta, but there is a possibility that the wheels from the Beetle/Jetta
may have too high of an offset, that would prevent the wheel from clearing the
large calipers on the a3 GTI/GLX.
For info on: how to subscribe & unsubscribe, the list's tech/how-to
library, etc. see: http://www.panix.com/~aqn/GTI_VR6/gti_vr6_list/