Originally Posted by Renus
Finally I got the very confirmed reply from my local bmw dealer after M Performance parts are released for purchase (considered as upgrading your bimmer). If your car is either in Sport or M Sport package, springs would be retained and new shocks are required, as well as the front & rear sway bars are required to installed too. Hope this can help a bit for u guys ^ ^.
I just purchased the M Performance suspension retrofit for my 2013 f30 335i sportline.. you should/can re-use your ARB's (front & rear).. the springs need to be upgraded
. Front coil PN: 31-33-6-860-630 and rear coil PN: 33-53-6-860-621.