The chain rules in California are probably to compensate for the vast numbers of drivers we have around here that have absolutely NO clue how to drive in the snow, or for that matter, in rain. I've seen fools in 4x4 vehicles flip them in the snow while I was driving a long wheelbase van conversion, no chains on the same cleated road. It's a question of technique, not brute force and ignorance...
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'The Silver HamShack' (2007 International 22FB CCD 75th Aniversary model)
Multiple Yaesu Radios inside and many antennae sprouting from roof, ProPride hitch
2012 shortbed crewcab 4x4 Toyota Taco TV with more antennae on it