Servus people, I have a somewhat unusual question and that is that I work at a car dealership in part service and sold a tire a few days ago. The customer had an A3 8V 1.6 TDI mounted on the Y summer tire, unfortunately no Y tires of the manufacturer were available, W were available. Then the service consultant said we simply order W, go also up to 270. First I didn’t think much about, were ordered and mounted. In the afterwards I came to the The speed index is not about the one in the vehicle’s license, but about the maximum speed of the vehicle + approx. 8-10 KMH, is that correct? How is that for mixed assembly, all data are the same except for the index and the tire is called something different, but is from the same manufacturer ? Please no Horro stories, I really break my head about the thing and am afraid now that the customer could get a tyre pitcher or other … In the company also nobody could give me an exact statement on the topic, which all said, that is not a problem at all, but also did not know the exact regulation … already many thanks …