This sounds so serious!...CHP require chains on the roads to the ski slopes when there is a certain level of snow. They won't let you on the roads without them...
I blast threw a winter storm (white out conditions) in an Impreza with all seasons but I attribute this more to the car than tires. 'My' main concern when it comes to winter is 1) Ice and 2) depth of snow. Other than that, I can get by ok with just about anything in NE winters (tried summer tires once –once..). No clue what its like in N. Cal or Canada but I tend to think this requirement is to protect people due to the geographical location where if you get stuck or slide into an accident, there's no one around to hear/help you. So, play it safe...
Odd I don't like the Toyo Observe G-02 Plus on my 5.I want to get Bridgestone Blizzaks.
Had a foot of snow at my in-law's down in Southern Oregon. Chained up my 5 with regular chains from Les Scwab with no problem. I went ahead and got them since the counterman said he put them on his girl's 3 with no problem. Also did a test fit with them. The only thing I'd suggest is stopping to retigthen twice and not just once like the instructions say.
I'm heading to central Oregon this week, so I'll do some further on road testing.