Wheels for Kia Rio 1,2 YB

Hello, a question for a friend to the professionals from the forum: Search rims for the Kia Rio 1.2 YB. The car is on the serialalus (185/65 15 88H with 6Jx15 ET46). There are still steel rims available in 6Jx15 H2 ET49. Furthermore, according to COC, there are still allowed: 6Jx16ET49 and 6.5Jx17 ET49 Do you think that it is allowed to drive the 6Jx15 H2 ET49? Do you need a single acceptance from the TÜV because the ET does not exactly match (only with the larger rims ET49)? Does the H2 still play a decisive R That’s nothing in the COC. Greetings gromi