MY CAR A 1999 INFINITI Q45 HAS 4 CONTINENTAL TIRES. THESE WERE PURCHASED LAST YEAR AND HAS BEEN USED FOR ABOUT 6000 MILES. ON TUESDAY AUGUST 30 THE RIGHT REAR TIRE BLEW OUT CAUSING THE VEHICLE TO SLIDE ON THE RIGHT SIDE AND EVENTUALLY OVERTURN. IS IT NORMAL WITH A STEEL BELTED RADIAL FOR THE THREAD SURFACE TO COME COMPLETELY OFF THE SIDEWALL. THE AFFECTED TIRE IS IN 3 PIECES WITH THE WALLS ON THE RIM AND THE TREAD COMPLETELY CUT OFF BUT STILL IN A CIRCLE. *NM