2011 535i Sport with ARS and DDS. I had Good Year Excellence ROF tire before this. I swapped to regular tires because I got sick of nails and bubbles on the GY runflats. The car is completely transformed. Everything that you want, better ride comfort, quiet, loads of grip and traction. I didn't realize what I was missing in this car before I took the runflats off. I've only got 400 miles on the tires but so far they have been amazing. I just drove Malibu canyon and where the car wuold previously understeer and roll, now all I have is grip and a smile. Do yourself a favor and ditch the runflat tires. I will follow up regularly.