AndresC 
2006 BMW Z4 Convertible 3.0si 2dr Convertible (3.0L 6cyl 6M)
Fun car to drive!
 Bought the car with 19K mi., after driving 13k mi. I only have good things to say about the Z4.  The sport suspension is incredible, you feel connected to the road, cornering is superb, it may be a little stiff for some drivers but keep in mind this is a sports vehicle.  The 3.0si engine meets and exceeds expectations.  255 hp for a 3,000 lb vehicle makes for speedy acceleration, the transmission sport mode makes the responsiveness that much better.  The instruments, stereo and GPS are up to par with other high end convertibles.  Even the trunk is of decent size compared to other convertibles available, enough for a weekend trip for two!