As the title states; 225/45R17. All four tires in terrific shape. I'd estimate 80% tread left, or so. They bare the M+S snowflake symbol.
To my knowledge, they've only been mounted once on the car I now own. I can provide pics or if you're in Bozeman, I can swing them by.
I have listed on Craigslist for $400 obo. But I'd much rather hook up someone here for less than the listed price. So make me an offer.

I would consider trade for some summer tires of a similar size; either 225/45 or 225/50. Or if you're inclined in certain mechanical or auto body services, I could use a bit of help there.