2007 BMW 328I Wheels Problems

DRIVING 30 MPH TPMS LIGHT CAME ON INDICATING FRONT DRIVER TIRE LOW, GOT HOME AND TOOK TRIED TO INFLATE TIRE, WITH NO LUCK. TOOK TIRE OFF AND THE INSIDE TIRE WALL HAD BLOWN OUT. 1 MONTH LATER THE SAME BLOW OUT OCCURRED ON PASSENGER REAR TIRE. THERE WAS GOOD TREAD ON BOTH TIRES. DON'T KNOW IF IT MATTERS, BUT BOTH TIRES WHERE RUN FLAT. I HAVE CONTACTED BRIDGESTONE, BUT NO RESPONSE. I'M ATTACHING PICTURES.

THE WHEELS/RIMS ON MY BMW ARE CONTRIBUTING TO MY TIRES FAULTS. THE BRIDGESTONE POTENZA RTS TIRES ARE CONSTANTLY HAVING BUBBLES FORM ON THE TIRES WITH NORMAL DRIVING. I HAVE REPLACED SEVERAL TIRES AS A RESULT. THEY TELL ME IT IS ROAD HAZARD. IF THAT WAS THE CASE I WOULD HAVE REPLACED TIRES ON MY OTHER CARS THAT I DRIVE MUCH MORE FREQUENTLY. LAST WEEK ANOTHER BLOWOUT ON INTERSTATE 395 IN VA. $500 FOR A NEW TIRE AND THEN THEY FIND ANOTHER TIRE WITH A BUBBLE. BMW IS AT FAULT AS WELL.

REAR ALLOY WHEEL IS CRACKED RESULTING IN LOSS OF PRESSURE. NO IMPACT OCCURRED TO CAUSE THIS CRACK. *TR

I JUST DISCOVERED THAT THE LEFT REAR RIM ON MY 2007 BMW 328 CONVERTIBLE IS CRACKED. MY CAR HAS LESS THAN 38K MILES ON IT. THE TIRES ARE 225/45 17' RUN-FLATS. I HAD FOUR NEW TIRES PUT ON ABOUT 6 MONTHS AGO. I GOT THE LOW TIRE PRESSURE WARNING LIGHT ABOUT A WEEK AGO WHEN I STARTED THE CAR. I CHECKED, DIDN'T NOTICE ANYTHING, AND RESET THE TPM SUCCESSFULLY. SINCE IT WAS A COLD MORNING, I FIGURED THE SENSOR WAS JUST REACTING TO PRESSURE CHANGE DUE TO THE TEMPERATURE CHANGE. A FEW DAYS LATER, IT CAME AGAIN. I DECIDED TO CHECK, AND FOUND THE PRESSURE WAS DOWN TO ABOUT 25 PSI. I FILLED THE TIRE TO RECOMMENDED PSI. I DROVE ABOUT 260 MILES ON SUNDAY, MOSTLY FREEWAY SPEEDS. WHEN I WAS ABOUT 30 MILES FROM HOME, THE WARNING LIGHT CAME ON AGAIN. AT THAT TIME I WAS ON A FREEWAY,...