Hello,
I am an owner of mini cooper s r56 2009 model(n14 engine) stage 1. Recently I decided to upgrade my suspension to koni special active (red one) with oem springs. I changed also all top mounts with new one from lemforder. First 2 months of driving was superb, big difference on a ride. But after begun the problems. Very annoing noise from rear suspension.The noise becoming louder after washing of a car or on a long trip (2hours and more).
I went to bmw dealer and they told me that the spring wasnt sitting properly. For 2 days it was ok but again the same annoing noise like broken spring...
Any idea from what could be? I will appriciate any help...Could be bad installation?
All top mounts and rear sway bar bushings are new.

I could sent also a video (mp4 or wav file) with the sound of suspension via email because i cant attach a video here i dont know why?

Thank you in advance,
Zisis