We needed snow tires for mountain travel so they were used from November to early April on our vehicle (that is why they are bagged in the photo).Each tires has a Three Peak Mountain Snowflake symbol; the Winter Maxx has been certified to perform in severe snow conditions. The tires have approximately between 8/32-7/32 of tread depth - new tread depth was 12/32, so there is still a lot of use for this set. Selling the set of 4 for $125.