I live in snow free Gilbert AZ. I will be driving to Linden UT next week and they are expecting snow. If I have the dual motors, do I still need a set of chains? I have driven in the snow, but like 20 years ago when I lived in Maine for 2 years, but again, 20 years ago. I have the stock tires that come with the car also. Still good tread with 13k miles on them. Any advice? Thanks.