It seems BMW won’t wait for Detroit to take the wraps off the new Z4. It was rumored that although the car was complete, the German roadster missed its LA debut do to a rights issue. Since the car is fully-baked, BMW is eager to get it out to the public. It’s now rumored that BMW will do its own reveal of the new Z4 before the Detroit Auto Show in January.
Sometime in December official images of the convertible should appear, and sometime later a coupe version will follow. We are expecting some styling differences between the coupe and convertible, which is good considering the convertible will be offered as a folding hardtop. The coupe version is also likely to be more performance-tuned with a stiffer suspension and lower ride height. Base engines should start around the current lineup of six-cylinder engines, and could possibly top out with a future "M" version with a V8 from the M3.
Another rumor that is starting to get some attention is that BMW might also working on a smaller roadster possibly called the Z2. The Z2 is designed to take up some of the slack that was created when the original z4 went upmarket from its Z3 predecessor. The new convertible (and possibly roadster) will be small and light enough that BMW would use it to showcase its hybrid technology called eDrive.