Thank you very much for the valuable information.
To get the approval for 16" Ronal 42R675 in Italy, we need 6 papers: I found 3 (attached), missing other 3, exactly the ABE 9637/2, /3, /4 mentioned in the page 6 of the TUV annex 6 of the supplement 16 of the KBA 45728*19
From what you say I undestand that the documents are 4: ABE 9637, 9637/2 (addendum), 9637/3 (addendum), 9637/4 (addendum). I asked to KBA but they say they need the BMW approval to release any ABE. I asked that permission to BMW but still got no answer.
And thank you for confirming what I got for 320iS, that is, unfortunately, no ABE 9637, so no 16" approval (in Italy).
All.to-6-Suppl-16.pdf
KBA-45728-19.pdf
KBA-45728-19-supll-16.pdf