Peter J 
2006 BMW Z4 Convertible 3.0si 2dr Convertible (3.0L 6cyl 6M)
Quality with Flaws
 Interior build quality is disappointing due to use of cheap plastics.  Been back to the dealer 4 time because of annoying squeaks and rattles but dealer cannot fix.  The high performance driving experience is marred by these constant squeaks and rattles, even happening at low speeds.  Ride is extremely harsh.  On anything other than perfect roads you can feel everything  down to the road paint.  The car is easily pulled from side to side by uneven roads.  Tire noise is high.  Of course this kind of handling is to be expected for this type of car.  Otherwise, the car has exceptional performance.