My EX GF has a 2000 328i and it has been quite trouble free, my boss has a 330CI and she loves is. But it eats tires like you won't believe.

The thing to watch out for on those are crappy plastic on the cooling components. The Ex's car had a tiny leak around the radiator vent screw so I went to tighten it up and it snapped off with very little force as it was so brittle. I had to replace the whole assembly.

They do look great and they are a whole heap of fun to drive. I would consider one.

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With best regards

Al