2015 GMC YUKON XL Wheels Problems

WHEN DRIVING BETWEEN 40-70 MILES AN HOUR. I FEEL A VIBRATION SOMEWHERE IN THE VEHICLE. THE VIBRATION FEELS LIKE U ARE ROLLING OVER RUMBLE STRIPS. THIS HAPPENS TIME AND TIME AGAIN ON THE HIGHWAY, WHILE IN MOTION ONLY.

I PURCHASED OUR 2015 GMC YUKON XL IN OCTOBER OF 2014. I HAVE BEEN DEALING WITH NOISE COMING FROM THE TIRES FOR ABOUT A YEAR NOW. I HAVE TAKEN THE VEHICLE IN FOR SERVICE AND HAD MANY PARTS REPLACED ONLY FOR THE NOISE TO COME RIGHT BACK. MY VEHICLE ONLY HAS 40,000 MILES AND ALL THE TIRES ARE WEARING TO THE POINT THAT BELTS ARE NOW SHOWING. WHEN TALKING TO CONTINENTAL THESE FACTORY TIRES HAVE AN 80,000 MILE WARRANTY BUT THAT TIRE WEAR WARRANTY DOES NOT COVER FACTORY TIRES. AFTER CALLING GMC, CONTINENTAL AND MY LOCAL DEALER, I FINALLY WAS TOLD THEY WOULD GIVE ME $250 TOWARD NEW TIRES BUT I COULD ONLY USE THAT TOWARD THE PURCHASE OF CONTINENTAL TIRES. RECENTLY THERE WAS A RECALL ON THE SAME TIRES THAT ARE ON MY VEHICLE FOR ALL THE PROBLEMS I HAVE BEEN HAVING. WHEN I CALLED CONTINENTAL, I WAS TOLD...

THREAD OF THE LEFT BACK TIRE FLOWERED UP AND IT POPPED WHILE DRIVING ON A HIGHWAY, NEVER SEEN ANYTHING LIKE THAT ON A FLAT. A COLLISION ALMOST TOOK PLACE, MY HUSBAND WAS ALMOST SMASHED BETWEEN THE CONCRETE WALL AND THE TRUCK WHILE TRYING TO CHECK THE TIRE, ON STAR RESPONSE WAS GOING TO TAKE 1HR 45 MIN. AFTER GETTING TO A SAFE PLACE WE CHECKED THE OTHER 3 TIRES AND NOTICE THE RIGHT REAR TIRE PRESENTED MISSING PART OF THE TIRE WALL AS A PUZZLE PIECE MISSING, TIRES HAD EXACTLY 30K MILES WITH THIS TRIP. TIRES ARE CONTINENTAL P275-55R20-111S WE TOLD THE DEALER TIRES ARE DEFECTIVE. *TR