You should choose winter tires in areas that endure long and treacherous winters as nothing outperforms dedicated snow tires. You should choose studded tires if those winter conditions entail lots of ice and hardpacked snow and if not, then non-studded tires are probable more suited for your needs. However, if the area where you live has mild winters, then maybe all-season tires could be considered. For more information regarding winter tires, visit: http://all-weathertires.mystrikingly.com/blog/when-to-use-dedicated-winter-tires