From Hankooktire-eu.com : Hankook Dynapro MT : The Dynapro MT is a rugged tire designed for true off-road drivers. The "V" shaped tread blocks are tapered for better grip in mud or sand and you should see them perform in snow. ->There are "ejectors" built into the tread grooves to prevent stones from penetrating --> Specifically designed shoulders keep dirt from building up and to help prevent damage from impacts --->With superior pulling capacity and thrust power as well as improved flat-resistance quality, this tire is ideal for rugged cars, boasting a powerful and safe driving performance in normal as well as harsh road conditions.