Tire Blowout problems of the 2003 GMC Envoy

I live in arizona where it is hot and dry. I was coming home from the mall with my 2 children on the expressway when I had the driver's side rear tire blow out. I was stranded on the expressway for an hour with 2 small children. My vehicle is fairly new - 2003 GMC Envoy xl and there is only 38,000 miles on the tires. When the tow truck came to change out the tire they indicated that it was very unusual for a michelin tire to blow the radials like it did. I have model p245/65r17. I still have the tire available, but now am having to have both rear tires replaced so they wear evenly and I see that some models similar to mine 245/75r16 have been recalled. I have not replaced the tire yet, because I am hopeing someone can give me some insight to the problem and I would like to know if I should have all the tires replaced not just the rear ones.

While driving the vehicle's right front tire blewout without warning. The tire separated from the rim and hit the rear of the vehicle causing damage. The rim was also damaged during the blowout.

While driving on the highway at 75 mph front passenger side tire blew off, leaving only the rim attached to the spindle. Sparks ignited when the rim came in contact with the concrete. Consumer was able to control the vehicle, and allowed it to coast to a stop.

While driving 70 mph, the left rear tire blew out. The driver attempted to steer the vehicle to the side of the road but the vehicle rolled over twice and landed upright. The front and side air bags failed to deploy. The driver sustained minor bruises.