My house is going to be expropriated for a highway. Since they aren't giving me enough to buy an equivalent property I am moving to Mexico where house prices are much lower. I will be driving from Vancouver to central Mexico in the winter. I don't have winter tires as I can manage without them in Vancouver but to drive south I need to go through snowy mountain passes. I currently have Dunlop All Season tires which will have about 15,000 km on them. I wonder what my options are. I don't want to buy 4 winter tires but even if I did there wouldn't be room to take my almost new current ones along. Are there some kind of chains I could buy? If so would I need 4 or 2? Are there any other options?