Snows are on, took 25 minutes.
Here is the culprit. There is no plugging that tire, the cut is a slit about 2 cm across. And the tread bars are half gone.
And the summers are done so the timing of this road hazard was about perfect, three more weeks would have been perfect.
The snows are squishy but ok.
And....WTF....my brake pads are all about 3/8 to 1/2 inch thick still after 30 k miles. So that's good.
Mike