Don't believe anything you hear in these videos about the Z4M being a great car. The Z4M Roadster is horrible, and the Z4M Coupe is even worse. The S54 engine is a dog. Buy a Porsche, instead. These things should only be worth $15K tops with low mileage. They suck so bad.
(Or maybe I just don't want the prices to increase, so I can add a coupe to my collection)
Salty