I love this kit...
One day... one day..
And the carbon fibre panels save a HUGE amount of weight. They may be bigger, but the original panels are steel and aluminium. Kerb weight of the Z4M motorsport is 1200kg. Our cars are around 1480kg. Ok, they will have stripped the interior from the motorsport version, but I would expect to see about 150kg saved from the Carbon Fibre bodywork on a road-car.