....if I want to go up to the mountains a few times a season to hit some pow. Is it a good idea to have winter tires? Currently, I’m running Pilot Sport A/S 3+ ZR (Y rated) tires that are technically M+S rated on my wagon , that has 4Matic.

Though I don’t technically need any snow tires for plying around the hills of Seattle, should I get some for going to Stevens and Snoqualmie?