So I have a set of spike spiders I originally purchased for my Contour. The Contour is long gone, but the snow chains remain. The wheel adapters where mounted for a season, but the actual traction/chain parts where never used. I think the car had 205-60-15 tires and four lugs. These are not car specific so they can be used on other cars. Of course you have to be a positive thinker and assume rain and snow are going to fall in CA this year.
http://www.spikes-spiders.com/
I am cleaning out the garage, no price really, just pay me with a bottle or two of wine or something. Local pickup in San Francisco, I am not up for the shipping headaches.