I did not have that experience , no vibration above 90mph, Of course changing to sport and sport + settings also helps. Mine came with Dunlop SP Sport Maxx GT DSST, maybe there is a difference. I'm also considering the change to non run-flats.Found this link a while back:
http://www.bimmerzone.com/BMW_Perfor...T-F10-KIT.html
My local dealer also has a set up for a spare, so check with yours. Hope this helps.