Change Ford Transit Tyre Size

Hello MTler, after an unsuccessful search I have to open up a new topic. My new transit (FT300L front drive BJ 2013) has summer tyres of the dimension 195/70 R15. On the old transit I had 215/75 R16. Since the (old) winter tyres are quite new and generally more expensive than the summer pellet I would prefer to continue using the winter tyres and buy new summer tyres + rims. In addition, the transit (long/high) with the small wheels looks really ridiculous. ge with around 4cm more ground clearance … also not bad! Now to the problem – Do I get the 215/75 R16 registered without any problems? – how does the transit with the approximately 10% more roll circumference with the already quite long translated clear? The official process..incl. Tachoangleichung is known to me! The snow chain problem is also known to me! Greeting Georg