Strange Vulcanis 19 inches rim.

I’ve already done a thread this time, because now the question has become concrete again, here again: I bought a set of 19 inch wheels for our XC90, used, from the intermediary (ebay) who can say nothing (or wants to) about the origin in hindsight. These rims have a designation 30635721 or 30635722, 8Jx19x49, Borbet-Germany, Volvo. After marking and also appearance quite clearly a silver “vulcanis” for the XC90. However, the rims have a centerhole diameter of 63,4 milimeters. The XC90 has 67,1mm. Ergo: They don’t fit on it. Midholes have not been reworked, that looks completely original. Was therefore only now with the dealer, after that with the TÜV. No one can make a rhyme on it. Finally, there is no other than to use the rims by single take-off at the XC70 or XC60 in the future, but I would have liked to know how this coming together. Does anyone have any idea? P.