2007 Bmw X3 Wheels Problems

TPMS ALERTED US OF A LOW TIRE. WHEN TAKEN TO REPAIR WE WHERE NOTIFIED THE LEFT REAR RIM WAS CRACKED AND LEAKING AIR. CAR WAS ONLY DRIVEN ON THE HIGHWAY, NO ROUGH ROADS...WHAT WOULD CAUSE THE RIM TO CRACK? I UNDERSTAND THE UK'S NTSB HAS ISSUED A RECALL AS BMW ADMITTED THAT THEIR WHEELS HAD DEFECTIVE ALLOY METAL CAUSING THE RIMS TO BREAKDOWN. HOWEVER, BMW OF NORTH AMERICA HAS NOT ADMITTED TO ANY DEFECTIVE METAL AND HAS NOT ACCEPTED RESPONSIBILITY. HOPE THIS GETS REVIEWED FOR SAFETY BEFORE SOME GETS PHYSICALLY INJURED OR DIES AS A RESULT OF THESE DEFECTIVE WHEELS. HAVING REVIEWED THE FORUM, THERE ARE HUNDREDS OF THESE DISCUSSIONS REGARDING CRACKED RIMS ON BMWS. THIS IS NOT A ONE CASE INCIDENT, THEREBY WARRANTS FURTHER INVESTIGATION. *TR

YOU CAN'T HIT A POT HOLE WITHOUT BENDING A RIM MY DAUGHTER JUST BOUGHT 09 328 WITH 7800 MILES, DROVE IT 3000MILES, HAS ONE CRACKED RIM, TWO BENT RIMS AND THE SHOP SAID SHE HAS TWO DAMAGED TIRES. SHE BOUGHT 4 NEW TIRES. I'M SORRY I TOLD HER TO BUY BMW. MY SON BOUGHT 08 335XI WITH 60000 MILES. DROVE IT FOR A FEW MONTHS, THE DEALER SAID IT NEEDED 3 RIMS STRAIGHTEN. ALSO BECAUSE IT HAD A MIS THE DEALER GAVE HIM AN ESTIMATE FOR $18,000.00 TO FIX THE RIMS, THE TWO LEAKS AND THE TRANSMISSION. HE GOT RID OF IT AS FAST AS HE COULD AND TOOK A BEATING. I HAVE BEEN DRIVING FOR 56YRS WITHOUT A BENT RIM UNTIL I BOUGHT THE 07 BMW. *TR