Hello, I have a company leasing contract with alphabet that includes both summer bikes 18″ and winter bikes. Unfortunately I had the winter bikes stored immediately than I picked up the vehicle. On request at the BMW dealer told me that the leasing 16″ winter bikes delivered. These are only the standard tyres and look honestly more than modest with an upper class vehicle. I have the following questions: 1. Can I buy 17″ winter bikes without any problems and drive them instead of the winter bikes ordered by the leasing? 2. Can I have the winter bikes handed over to me and privately store them and have my private bikes stored for this purpose and use the bike change service? Cost-wise, no other costs should be incurred as for the 16″ winter bikes from the leasing.