Unfortunately, we have no TÜV here, that is in Germany, thus in Italy is really much more complicated for this reason: we have not any dedicated authority that is in charge to do these stuffs. Indeed, all car manufacturer do what they would like to do definetly.
Moreover, I agreed with you on rims copies nasty quality, but I am forced to find them if any official Italian Audi's dealer will would like to concede "without reservation" certificate to me.
Further, about the sentence circled, a new rim that looks like as the original version of it is not a replacement of the latter automatically because it must have the same characteristics, but that any copies have - as you know better than me sure - so they are completely different rims according to EU law's provisions. However, they must respect ECE 124's rules, so they have to show the all possible applications car by car and model by model, that is the hardest thing because we are writing about a car that is near 20 years old, so I think that is quite rare that any wheels manufacturer may produced any product for it, in particular with the only specific design that I am looking for (RS TT 9 spoke).
Furthermore, I completely concur with "wheels were a factory option" point, that is the very reason with I am trying to support what I affirm: a car has different wheels/tyres measures on its documents just because its first owner did not choose a factory option despite what the first owner of another identical car did, unless the actual owner of the first car buy new rims and unless them are produced yet nowadays... This is no sense, but still being the situation here.
Is "225/40R18 92Y" the complete 18" tyre measure?
Thank you again.