 This is a great car.  However we have owned 2 740LI BMWs , we have replaced 7 tires total on these cars.  The run flat tires are horrible.  We are constantly getting bubbles in the tires.  BMW is well aware of this problem anWd offers insurance for the tires however, it isn't about the money for the tires, its about safety!!!  A car that costs so much money or any car for that matter should not have a safety issue with tires!