Ok, first question did you order the 19s? or 18s? You can get a contact address of some one and only mail the properly sized tires and have them installed once you arrive. That would be the cheapest alternative. Do you have a solid date yet on your arrival in Munich? I live in Schweinfurt it is about 2 hours north of Munich. I am stationed there and own a E90 M3. I would like to help you I know how expensive tires and rims in DE are. I have not been to BMW World yet and this would give me an excuse to get out of the house and get to BMW World