Arctic Claw Winter Txi M+S Radial Tire - 155/80 R13 79S High traction tread design which balances wet and dry performance with a quiet ride Deep lateral and notched circumferential grooves to maximize water and snow evacuation Patented "snow groove" which provides superior snow and ice traction Studdable winter tire for superior ice traction - if needed Enhanced stud retention to meets the industry's requirements for Severe Snow Service