Wheels AMG 9,5×19 ET50 with narrow fender expansion – Is that possible?

Hello dear forum members! I have bought a G350 BT, built in 2011, with the narrow fender expansion. I would like to mount the rims of the old G55 AMG in the dimension 9.5×19 ET50 – without conversion to the wide AMG fender expansion. Is this possible? Does the TÜV take this combination off or is the wheel not sufficiently covered by the fender? I would especially like practical experiences with this combination. se combination and has it been registered? Thank you and best regards Hagen