It seems we can track what ever vechicle you have bought to play around with, by your asking of xxx techs on the board? Wow, even more than I remembered.
I'm just a simpleton but I bet you can find a few BMW techs at this place. https://www.fieldsbmworlando.com/
From what I've read about them, avoid anything that has the N63 engine. Which covers a lot of models and model years.