In California... for passenger vehicles, you just need AWD/4WD and M+S tires to avoid most chain control conditions. Only in the most severe R3 condition, everyone needs to chain up, including SubarusThey look like good all season tires, but I don't see enough sipes or slush clearing tread pattern to be get the snow tire rating? Do you need the snow tire rating to avoid chaining up on some roads in the mountains in the winter?