Nexen Winguard Winspike Studable Winter Radial Tire - 235/60R18 107T Mileage Warranty: 30,000 mi Road Side Assistance:36 Months Free Tow & Tire Change Exceeds the RMA's (Rubber Manufacturer's Assocation) requirements for the Mountain Snowflake symbol, making it an excellent choice for use in the harshest snowy conditions, slippery roads, and cold weather. Sidwall: Black Letters