Over here in the people republic of [Insert State here] we have man sized pot holes all over the place. The roads are worse than in some 3rd world countries. So no the runflats are no good here. In fact when you have a puncture, it usually of the blowout type that renders run flats useless. I now tote a spare around and wish my car came sans this crap. I have since bought real tires. They bubble a lot less easily too copared to the expensive OEM runcraps.