Hi all. This is my first post to this forum. I've been salivating over a M3 for awhile now, but I live in the SF Bay Area and know of a few M3 break ins, and this is the one issue that is keeping me unfortunately from buying my dream car right now. I think solution #1 is obvious. There are a lot of luxury-ish 4-door sedans with trunks in the Bay Area that are not being broken into, and a lot of them have something in common: you can't fold down the rear seats by first pushing a button or lever on the seat itself; rather, you have to push a button or lever from the trunk.