In many years with different Mercedes Cabrios not only the vehicles, but also we have become older. Now there was a new purchase. Since there is only one “high seat” on the market as convertible, the choice was, what a surprise, on the T-Roc.?? Since we wanted to have the vehicle quickly at the beginning of the season, we bought a storage car. Unfortunately, it lacks the emergency bike. As a burnt child I would like to retrofit this absolutely. Can someone the spare part number ode r call a article number? Probably it will be the 125/70 18 99M with the rim 5×112, 3.5″x18 H2 ET 25,5mm, which will also be delivered with the “normal” T-Roc. I thank you for enlightening answers. take3