Hello dear tire experts, someone here in the forum knows the exact differences between the standard tyre model Michelin Alpin A4 and the model Michelin Alpin A4 AO (AO stands for Audi vehicles, but according to Michelin website also suitable for vehicles of other brands) I now ride the AO version as 185/60 R15 88H on the polo and only know that compared to the previously driven and reclaimed “Normalo version” the rolling noise is quieter. ellche Properties Audi is worth it and how Michelin changes the tire? Something will probably be different. Michelin or Audi don’t have any exact information about it! Why do they make such a secret – I as the end user must also know exactly if there are deviations to the already frequently tested “normalo-version”! Not that the winter characteristics are possibly worse Many greetings