BMW Z4 - new image gallery

By the time the BMW Z4 actually makes its debut at the Detroit Auto Show, it will be old news. Well not really, but we keep getting new image galleries on the much-improved roadster.

The new Z4 comes in two models for North America, both using the same 3.0-liter inline-six cylinder engine. The sDrive30i has 255 hp, and the sDrive35i uses twin-turbos (one turbo designated for three cylinders each) to upgrade to 300 hp.