2006 Bmw z4 roadster specs Source Source Source Source Source Source Source Read Also: 2006 Bmw m roadster parts 2006 Bmw z4 2.5 specs 2006 Bmw roadster specs 2006 Bmw m roadster specs 2006 Bmw z4 m roadster horsepower 2006 Bmw z4 m roadster specs