New Aerodynamic Add-Ons for BMW M3Being one of the best BMW tuners in Germany, Hartge constantly updates its offers for the Bavarian car. This time, the German tuner has released a new set of aerodynamic extras for the BMW M3 range that consists of a sedan, coupe and convertible models. The list contains spoiler carbon fiber front lip, side sills to the front and rear, rear diffuser for the coupe