TL* THE CONTACT OWNS A 2011 CADILLAC CTS EQUIPPED WITH CONTINENTAL CONTI SPORT TRACK, SIZE 275/40/R19 TIRES. THE CONTACT STATED THAT WHILE STOPPED, A MESSAGE ON THE INSTRUMENT PANEL STATED THAT THE REAR PASSENGER TIRE WAS EXHIBITING LOW AIR PRESSURE THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THE CONTACT NOTICED THAT THERE WAS A LARGE BULGE ON THE SIDEWALL. THE DEALER REPLACED THE TIRE. THE FAILURE RECURRED AT THE SAME TIRE LOCATION APPROXIMATELY ONE YEAR LATER. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND THE TIRE WAS REPLACED. THE FAILURE MILEAGE WAS 7,000. UPDATED03/15/12 *BF