Home » 355HP, 4.7s 2016 BMW X4 M40i Brings SuperTruck Style and Pace from $55k » 2016 BMW X4 M40i 66 2016 BMW X4 M40i 66 Home » 355HP, 4.7s 2016 BMW X4 M40i Brings SuperTruck Style and Pace from $55k » 2016 BMW X4 M40i 66