I bought a set of four Michelin Ice X tires for when my wife had to commute from Cobble Hill to Victoria for four winters. The Tires were mounted by Joe's Tire Hospital four times in November and removed four times each spring from our Mazda 5 Wagon with 17 inch rims. The tire size is 205/50R17. I copied this number sequence from the side-wall of the tires. Hopefully this gives you the details of their size. There is only 60K milage on our car in total, so there isn't very much wear on these tires. One thing my wife liked about these tires is that they stick like glue in the rain. No skids. The tires have been stored in their bags for three years, hence are in perfect condition. Reason for selling is we are likely trading in our car in the upcoming months. I am also tired of tripping over these tires in our garage, so have decided to sell. Price is $300.00 firm, no haggling. as far as I can recall I paid a breath over $900 tax-in for the set. For $300. you can't lose. Merry Christmas.