1996 TOYOTA 4RUNNER Tires Problems

ON JULY 7, 2012, I WAS DRIVING MY 1996 TOYOTA 4-RUNNER WHEN THE REAR DRIVER SIDE TIRE FAILED. THE FOUR TIRES WERE DUNLOP GRAND TREK AT21 P265170R16 (111S M+S 014814), PURCHASED NEW AND INSTALLED IN JUNE 2007. I DRIVE LESS THAN 8,000 MILES PER YEAR ON THIS VEHICLE. THE MILEAGE ON THE FAILED TIRE WAS ONLY 25,843 MILES. IT WAS PROPERLY INFLATED. I DID NOT STRIKE ANY OBJECT ON THE FREEWAY. THE SUV WAS IN EXCELLENT RUNNING ORDER AND WELL MAINTAINED. AT THE TIME OF THE TIRE FAILURE, I WAS TRAVELING 70 MPH ON INTERSTATE I-80 IN IOWA ON MY WAY FROM KANSAS CITY TO CHICAGO. THE ACCIDENT OCCURRED AT MILEPOST 287.5, WEST OF DAVENPORT, IOWA. I TRIED TO CONTROL THE SUV, BUT I STRUCK THE MEDIAN MADE OF STEEL POSTS AND ANTI-CROSSOVER CABLES, FIRST SUSTAINING DAMAGE TO THE DRIVER?S SIDE OF THE VEHICLE. THEN, THE SUV HIT A POTHOLE...

WITHIN A ONE WEEK PERIOD, I EXPERIENCED SEPARATION IN TWO TIRES. THE DEALER REPLACED BOTH TIRES PRIOR TO FAILURE, HOWEVER A SEVERE VIBRATION WAS DETECTED PRIOR TO REPLACEMENT. THE TIRES IN QUESTIONS WERE MANUFACTURED BY DEAN TIRE AND RUBBER. WILDCAT RADIAL LT. 265/75R16. DESIGN 8126. OTHER NUMBERS ON THE TIRE ARE 14589-2 AND R5512. *TR