The BMW Z4 Roadster is a luxurious two-door convertible sports car. It features a folding metal roof, resulting in a quiet cabin even at motorway speeds when it is set up. The Z4 also delivers strong performance from its range of turbocharged petrol engines. The ride is also comfortable, helped by the high quality materials which surround the cabin. This is a great choice for car buyers keen to find a roadster which is fun and easy to live with.