Hmm I was thinking run flats too but the OP in this thread said he had his tires replaced 3x and another poster said he had snow tires/rims (non run flat) installed and had the same issue.
2015 S550 Sport Package (White w/2 tone oyster/black)
2013 Maserati Quattroporte (Grigio Granito/Cuoio)
2015 Escalade ESV (Black/Black)
2015 M4 (Sakhir Orange/Black)
2014 328i M Sport (Matte Dark Gray Wrap/Black)
2015 GS350 F Sport (Black/Cabernet)
2015 Fiat 500e Sport (Grigio w/orange accents/Black)