The stunning carbon-fibre diffuser is offered as an option with the choice of a high-gloss or matt finish. It is a completely new design from the one that comes as standard on the car, and it gives the rear of the M5 a more aggressive and sporty feel....

The stunning carbon-fibre diffuser is offered as an option with the choice of a high-gloss or matt finish. It is a completely new design from the one that comes as standard on the car, and it gives the rear of...