While, studded tires are now legal in both Idaho and Washington, there are many studless alternative snow and ice winter tires that won't damage the roadways and in turn our future pocketbooks.
I haven't used anything except all season radials, for years now, but with the last three winters we have had and a longer commute everyday, I decided to purchase winter snow and ice tires.
Consumer reports can assist you in making sure you get the best tires for the amount of money you'll spend on them. The tires I chose, are not ranked number 1 on Consumer reports, instead I decided to go with word of mouth on their performance, from people I know, that have used the same ones I just purchased.
If you'd like to check out the consumer reports before you buy them, I've included a link below.