My folks get studs in the winters, and they're in their 80's now so it's probably a good idea not only for the ice performance but also so people can hear them coming so they know to get out of the way. I don't bother with dedicated snow tires, just AT tires year round, and that's good enough for our rigs. I recently put Falken Wildpeak AT's on my truck and they have the mountain snowflake symbol on them. I've only had them in snow once so far but they did extremely well - I'd say better than the BFG KO2 tires I had on the truck previously.