2012 TOYOTA HIGHLANDER Tires Problems

I WAS DRIVING ON I-35 AND HAS TO STOP AT THE SHOULDER FOR ABOUT 30 SECONDS TO FIX SOMETHING. THE SHOULDER IS SMOOTH AND NEWLY PAVED. THEN I WENT ON DRIVING AGAIN, MINUTES LATE, THE TIRE LOW AIR INDICATOR WAS ON AND A FEW MORE MINUTES LATER, THE LEFT FRONT TIRE WAS TOTALLY FLAT. THE TIRE HAS ONLY 7500 MILES ON IT AND WAS TOLD BY TOYOTA DEALER THAT I NEED TO PURCHASE A NEW ONE. AND THERE IS NO WARRANTY ON IT SINCE IT IS FROM A NEW CAR AND I DID NOT PURCHASE THEIR EXTENDED COVERAGE. I THINK IT IS QUALITY OF THE TIRE USED AND I SAW TONS OF SAME COMPLAINTS FROM OTHER TOYOTA HIGHLANDER OWNERS. *TR

MY HUSBAND AND I WERE DRIVING ALONG EL CAMINO REAL IN SOUTH SAN FRANCISCO CALIFORNIA WHEN WE HEARD A VERY LOUD BANG AND OUR CAR SWAYED TO THE RIGHT AND ALMOST HIT A BYSTANDER. THE REAR PASSENGER RIGHT TIRE BLEW OUT AT NO APPARENT REASONS. THERE WAS A BIG CRACK OF 3 TO 4 INCHES ON THE SIDE (INSIDE PART) OF THIS TIRE. WE BROUGHT OUR CAR TO MELODY TOYOTA TELLING THEM THAT IT WAS A DEFECTIVE TIRE BECAUSE THERE WAS NO SIGNS OF NAILS OR ANY OTHER OBJECTS THAT WILL CAUSE THE TIRE TO BLOW OUT. FORTUNATELY, WE DECIDED NOT TO TAKE THE FREEWAY THIS TIME OR ELSE WE WILL BE IN A BIG ACCIDENT. MELODY TOYOTA TOLD US THAT IT WAS DUE TO OUTSIDE INFLUENCE BUT THEY ARE NOT SURE ABOUT IT BECAUSE YOU CAN SEE THE SURFACE WAS SO SMOOTH AND NO MARKS OF ANY OBJECTS HITTING...