Different rim size and hole circle – possible with Tüv?

Hello, since I found that one of my Borbet-T rims has suffered a bump, I had a great idea again… I still have 3 rims Borbet BS design lying … However LK 5×120 ET35 in 9×18″….. Now the great idea of screwing 2 of them on the rear axle with H&R adapter plates (20mm widened by this), should fit back even without pulling. At the front there are 7,5×17″ ET35 with LK 5×110 still to buy with expert report for Omega B MV6… W if I organize two pieces of it, and put corresponding tyres on it (which dimension yet no idea), in order to equalize the pull-off circumference, you have a chance to let this even take off at the TÜV? Achja vehicle gets 40mm deeper… For opinions/stimulations I would be very grateful