All 4 tires. I switched to All weather tires and no longer need these all seasons. Average tread depth 4.5 mm wear is even front and back One of the tire have a nail in it, did not know about it after its taken off. Tires are pretty old they still got good threads for summer driving. that's why i am selling it for cheap. Feel free come and take a look. i am usually available after 5pm https://www.continentaltire.com/news/what-are-continental-tire%E2%80%99s-quickview-indicators