I replaced the original Pirelli run-flat tires with these Michelin Pilot tires. Immediate impression is much less road noise, less jarring over road ruts and equally good handling and feel in corners and acceleration. These are NOT runflat tires, and I deliberately chose this to imporve the comfort of the ride of my lowered Cooper S.
I recommend these tires over the OEM pirelli run-flat tires. I carry a can of slime in case of a puncture, but have not had a puncture in several years so am not too worried about that, and I would probably call BCAA or AAA if it was a serious blowout.