I have a 2012 335xi Coupe M Sport and the ride is harsh/loud over bumps. Very jarring actually. I saw where you mentioned Koni FSD's and M3 bushings to soften it up. It seems that the Koni's don't fit my car. Is this correct? If so, what do you suggest? I just got this car last week and it came with Bridgestone driveguard RFT which I know is part of the problem but what other alternatives are there if the Koni's don't fit my car? Next best thing needed. I've had M sport in all my previous BMW's but this is ridiculous. Thanks in advance!