Not sure, but it's been leaking all week, pumped air into it several times. Didn't see any obvious damage. I thought it might be the valve, which was the issue last time (2 years ago, different car and tires).
They already ordered the replacement tire for me, so if I'm being scammed I'm going along with it this time. They are fairly new tires, too, 6k miles Continental DWS (great tires otherwise). Been getting much better grip in wet and light snow conditions.
NY roads suck, by the way. Apart from dodging mattresses (see my prior post), animal carcasses, and debris, there are way too many potholes in both the city proper and the suburbs.