Michael 
2006 BMW Z4 Convertible 3.0si 2dr Convertible (3.0L 6cyl 6M)
3.0 si is the best BMW ever
 The new BMW Z4 3.0si is a huge improvement over the last Z4.  I just traded my 2003 3.0i.   The Sport suspension and 18 inch wheels are fantastic, as is the new engine. Absolutely fantastic-  I am driving with a grin, finding excuses to drive. Great car.