2018 BMW 2 Series C RWD

I HAVE A 2018 2 SERIES XDRIVE CONVERTIBLE WITH 18' PIRELLI RUN FLAT TIRES. THIS IS MY SECOND 2 SERIES. I HAVE HAD 6 OF THESE TIRES BLOW DUE TO POTHOLES OVER THE TWO CARS I HAVE HAD OVER 4 YEARS. THE LAST ONE THAT BLEW WAS ON FRIDAY ON I65 JUST SOUTH OF LOUISVILLE. I HAD TO WAIT 4 HOURS FOR TOW TRUCK TO TAKE IT TO BMW OF LOUISVILLE. I PROCEEDED ONTO NASHVILLE. I PICKED THE CAR UP ON THE FOLLOWING MONDAY. THE TIRES ARE 18' PIRELLI CINTURATO P7 A S RFT RUN FLAT. THIS IS A CHRONIC PROBLEM WITH THIS CAR. MY BMW SERVICE PERSON SAYS THIS HAPPENS SO OFTEN WITH THESE CARS. THIS BLOWOUT PATTERN IS NOT ACCEPTABLE. I NEED NOT TO BE TO BE WORRIED ALL THE TIME THAT A TIRE IS GOING TO BLOW WHEN A POTHOLE IS HIT. ESPECIALLY ON THE HIGHWAY. I MUST GET THEM CHANGED. I THINK THIS COULD BE A DEADLY PROBLEM. IT SHOULD BE LOOKED INTO BY NHTSA.

DRIVING DOWN THE FREEWAY AT 65MPH, CAR ENGINE JUST SHUTS DOWN. NO POWER STEERING, NO WAY TO GET OVER. CAR DISPLAY SAYS DRIVE TRAIN ERROR. CAR GOT TOWED TO THE DEALER FOR SERVICE, DEALER "FIXES" ISSUE. 2 DAYS LATER, EXACT SAME THING HAPPENS AGAIN ON THE FREEWAY AT 65MPH. ENGINE JUST SHUTS DOWN. TOWED BACK TO THE DEALER. STILL THERE, NO FIX YET. HOWEVER, HOW IS MY WIFE SUPPOSED TO FEEL SAFE IN THIS CAR NOW. IT CAN DIE ON THE FREEWAY AT ANYTIME AND YOU HAVE NO POWER AND TRAFFIC IS ZOOMING BY.