Features Michelin® Silica Technology™ increases durability up to 19% and helps maintain tread block integrity over the life of the tire Michelin® Silica Technology™ provides up to 11% more durability The adaptive design provides up to 15% more traction when new Not for highway service (NHS). SIZE: 80/100-21 PART# 0313-0914 The use of the tire and other vehicle data and information accessible through this webpage is limited to persons located in the United States of America and Canada. ALTHOUGH THE DATA IS BELIEVED TO BE ACCURATE, NO WARRANTY OR GUARANTEE IS MADE REGARDING THE QUALITY OR ACCURACY OF THE DATA. All data should be verified by a tire professional, the vehicle placard (typically located on an inside door panel or on frame), and/or the vehicle owners manual.