Very briefly the facts: The vehicle is a Mazda MX5 NC so a two-seater. I shot at the motor fair in Essen cheaply (trade fair discount) complete bikes, which I want to pick up in March. The company is in the Cologne area. I come from Bochum, about 150km (on my original rims I have now winter tires). The rim company offered me to do the assembly and registrations, which is very convenient to me. Because if there is something wrong (lenkradflattern Unbalance) I can immediately change Now it is true that a roadster is not the ultimate means of transport. I have to build out the passenger seat at home and place it in place of 2 or 3 wheels. One fits in the trunk and the other possibly on the luggage carrier. Could the Junx from the TÜV/Dekra complain if a seat is missing? The seat has an egg-built airbag, but can be switched off. It is only about the rims.