Yikes. Driving back from the rifle range yesterday (nobody was out, 3ºF must be the temp where the tacticool guys panties freeze) I noticed a little wobble . Pulled into the closest gas station which was about 5 miles away.
Left rear tire looked like this
Damnit. Not even going to ask if it's OK to continue on my merry way... I checked it, 6psi. Aired it up to 32 and held, made it home. Parked it last night, and sourced another identical Blizzak with corresponding tread depth. Really didn't want to sink 800+ bucks into a set, since we all know AWD = replace them all.
The ONE instance where TPMS might have saved me in all my years of driving. Ah well.