Sounds like a bad wheel. Our wheels tend to form a hairline crack at the rim edge to the body of the wheel. It often opens and closes as you drive it leaks sporadically. You can park it for days without issue and then have it go flat in less than a mile of driving.


When this happens you can easily see the crack on a demounted wheel. But hardly on one with the tire mounted.


I suspect your "Tire Shop" didn't really look.


As for wear, most of us with NA's get about 20K-25K or so on the tires. SRT6's not so much. I'm sure it is possible to do better by driving more modestly. But then you might as well drive a Prius.