Blowout, bad and good luck

The reason I guessed earlier that it was a sidewall blowout, and then the OP confirmed it, was that I had 3 blowouts of that exact tire. If I still had them they would now be 8 years old. One blew at 2 years, one at 4, and the last one at 7 year and 25,000 miles while sitting in the campground. I owned them from brand new, they were never a pound low on inflation, they were never run over 65 mph (my toad speed limit), and were never overloaded. None had anything in the tread that would suggest they leaked air before they blew. I blew a front right, an inside right rear, and finally an inside left rear.

I firmly believe that Goodyear had a bad run of tires and will not own up to it. All three of my tires had the EXACT same failure - a sidewall blowout about 2 inches in diameter.

To the OP, I am glad you handled the blowout well.