Tire Tread/belt problems of the 2003 Chevrolet Suburban

We have a 2003 3/4 ton Suburban with approximately 42,000 miles. We purchased this vehicle brand new in January 2003. On the way home from charleston, SC on interstate 26 near the I-95 intersection the right rear tire came apart at highway speed. The tread separated from both sidewalls, and stayed intact. Air pressure was check on Friday. The tread was inspected and no cut, tears or punctures were present. There were only 2 passengers with light luggage in the vehicle. The tire is manufactured by brigdestone. The information on the tire is the following: lt245 75r16 120/1165 m+s r265g2 e4 0012336 load range e 34449ex26564 made in mexico.

Exiting onto on ramp right rear tire tread separated from tire causing damage to vehicle. Tire was still inflated however tread had completely separated from tire.

While driving at 65 mph rear left tire tread separated and blew up. Consumer had to pull over . Firestone, wilderness size# unknown. Dot: unknown. Dealer was notified.