Went down to 10 psi after a mile or two in the snow. Not much change in elevation between the air down point and the lost bead location.Ouch, looks like a headache. Was that 10psi before the snow or after the freezing temps? Tire pressure will drop with temperature drop too. So if you started at 12 and then got into the snow could be down to 8psi!
Also, love your username. My favorite book.