Tire age

I was a tire buster, then later an alignment mechanic for a Goodyear dealer back in my Yute. Big place that did a lot of truck service too. We had one old timer that did all of those though as they weren't going to allow any of us kids get our face torn off by one of those exploding rings.
Don't kid yourself either. It really happened sometimes. That's why I NEVER touched one if the ring had any dents or was twisted when I removed it, or the ends were "sprung" and too far apart when the ring was removed. There were some older guys there who were real idiots and aired them up WITHOUT putting them in the cage, because they were in a "hurry". I've seen one blow apart, but it was in a cage. The cage wasn't worth a chit after that.