I've been looking into buying an older BMW for a while for a few reasons, mostly monetary, and I'm only looking to spend up to like $2000 on the initial investment. Those cars are not hard to find at all. However, I know zilch about older BMWs, and the information is sorta hard to sort out. A buddy at work told me to find a model that a lot of people are into, so there will always be parts.
Any advice what to look for, what to keep away from?