Audi A5 – Can a rim with other ET be on it?

Hi, I drive the Audi A5 2.0 TDI Sportback (0588 / AXI) and I have the following data in my vehicle license: Field 15.1: 225/50 R17 94Y Field 15.2. 225/50 R17 94Y I have the summer tyres Michelin Primacy 3 with the size 225/50 R17 94Y currently on it. Unfortunately, the standard rim is ultra ugly, which is why I want to pull new rims up on these tyres. On the EC conformity determination the following is stated in field 35: Rowing/wheel combination axle 1: 225/50 R17 94Y / 7.5Jx17 ET28 axle 2: 225/50 R17 94Y / 7,5Jx17 ET28 Does that mean I can only take rims that have the ET28 or can I also take rims with any ET? I ask because if I limit the search to the rims 7.5Jx17 with the press-in depth to 28, I get only a minimal selection… Thanks for your help.