2001 Subaru Impreza

DRIVING ALONG THE FREEWAY AT 60 MPH, THE LEFT REAR TIRE HAD A BLOWOUT. UPON INSPECTION IT WAS THE INTERIOR SIDEWALL WHERE THE FAILURE OCCURRED. I NOTICED THAT IN THE SPECIFIC LOCATION OF THE FAILURE, THE SIDEWALL WAS EXTREMELY SOFT; UNLIKE THE REST OF THE SIDEWALL. THE TIRE WAS TAKEN BACK TO COSTCO; BUT THEY REFUSED TO ACCEPT THAT IT WAS A DEFECTIVE TIRE. THE TIRE HAD 25,000 MILES ON IT; DRIVEN CONSERVATIVELY. I DO STILL HAVE THE FAILED TIRE, AND TWO OTHER TIRES JUST LIKE IT ARE STILL ON THE CAR. THE TIRE IS A BRIDGESTONE POTENZA 205/55R16 91W, ULTRA HIGH PERFORMANCE. *NM

FIRST OFF THE ROADS WERE WET FROM A PREVIOUS RAIN AND THERE WAS NO STANDING WATER. I WAS TURNING A LEFT HAND CORNER FROM 3040 ONTO SERVICE ROAD OF I-35E SOUTH. WHILE IN THE TURN I HYDRO PLANED INTO THE CURB. I CALLED FOR A WRECKER AND WHILE LOADING THE CAR I'VE FOUND THAT 2 OF THE 4 TIRES WERE PUT ON BACKWARDS. THE RIGHT FRONT TIRE AND THE LEFT REAR. THERE IS A ROTATION ARROW ON THEM. I CALLED B.F GOODRICH AND THEY SAID THAT THE TIRE BEING PUT ON BACKWARDS COULD HINDER THE RAIN SHEDDING OF THE TIRE. HAVE PICTURES OF THE TIRES ON BACKWARDS AND A ESTIMATE OF THE DAMAGE.*AK (TIRESIZE: 235/50ZR16)( DOT NUMBER: TIRE SIZE: 235/50ZR16 )