Not sure what did it exactly, but sprayed some liquid wrench a few days ago, worked them back and forth a bit yesterday, hit them with the impact today, took a bit but spun them off.
I think it helped that it was warm today, but who knows.
That rear tire is the only one that was flat, the sidewall is completely cratered but it doesn't leak there.
It leaks all around the bead, outside only.
Sat decades, front tires on concrete, with the passenger side facing any possible weather, yet the driver side tire was destroyed.
Oh well, onward. Going to post another video soon.
Digging this toad.
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