Hello! I drive a 645ci and would like to have it converted to LPG in January. Since the spare wheel chuck contains the battery and the safety block, the question arises to me whether one can also “transform” it or if someone already has experiences with it. By this I mean that the wheel chuck is empty (place for an LPG wheel chuck tank) and the wheel chuck content is transferred to another place in the trunk. The majority of the LPG conversionists don’t dare there, two say it is possible ch, want to settle for expenses. Greetings Chris