From 4Car:
http://www.channel4.com/4car/rt/bmw/3-series+convertible/1342/1
Assets
Exceptional refinement roof up or down, ride quality, build integrity.
Drawbacks
Huge weight blunts performance and driving enjoyment, disappointing looks.
Verdict
A fine car and better than its immediate rivals, but still asks the owner to pay a considerable dynamic penalty for the pleasure of top-down motoring.
http://www.channel4.com/4car/rt/bmw/3-series+convertible/1342/1