Hello, my convertible only has a good 2 months – of course with summer bikes (19″ – and is now looking for a winter set. There are various great offers from dealers here, but I have problems with the “conceived” aziness… I would like to have 18″ with 245 front and rear… My friend is not responding to my question, so I’m addressing the knowledge here: a) Lt. EC certificate of conformity (former yellow CoC papers) I may mount “only” 19″ wheels (VA:245, HA:275). First question: or is this just the indication of what “was delivered”. b) lt “reifengroesen.de” (as far as the “official” is concerned) stands – either 19″ all 245 or – 19″ with VA:245, HA:275 or – 18″ with VA:245, HA:275 c) if I am looking for winter bikes in the BMW shop with the FIN/VIN of my vehicle, I find the set with 18″ and 245 front and rear What’s right now? I have an offer about a completely new set of exactly the original BMW wheels like c) just 1,000€ cheaper than BMW. for your feedback!