20″ rims for XC90

Hello together ! Don’t you also think that the 17″ or 18″ rims on the XC90 look pretty micky ? I play with the idea to pull me 20-inch on it. But is not that easy, because: With the dimension 9.5 x 20″ the TÜV requires an exhibition of the wheel houses. If possible also 660, – for a wheelhouse cover of Volvo. This is of course not so funny. I have now come with my rim dealer to the point that I prefer an 8 x 20″ rim instead of 9.5 x 20, where no bodywork is necessary and where nevertheless 265/45/20 fits on it. Has any of you experiences with 20″ rims and TÜV registrations at the XC90 ? Gruss, Limbo