[Viva Las Vegas JDR]

Our family will be heading to Yosemite the first week of November. If you know anything about Yosemite weather then you know it is very unpredictable, the weather may be perfect or we may run into some sprinkling of snow. I am wanting to know if anyone has ever needed chains with their newell and how did it handle, where is the best place to get them, and what's the best brand or type? Which tires would I chain? just the outside tires? Any info would help, thanks in advance.