The BMW M3 and M4 are so good as drivers’ cars ... and its M4 bumper and aero kit, which includes the bumper, front lip, side skirts, rear diffuser and a swan neck rear wing.

Japanese tuning firm 3D Design is currently working on a way to make the brand new BMW 5-Series look more aggressive. The body kit components you see here have yet to be finalized, as the tuner ...