Open Country A/T II On-/Off-Road All-Terrain Tire This versatile all-terrain tire offers excellent traction and tread life along with a blatantly aggressive tread design and quiet ride. The Open Country A/T II is backed by a tread wear of up to 65, 000 miles and our No Regrets 45-day, 500-mile trial offer. Extreme sizes feature a deeper tread depth, and a more aggressive tread and shoulder design. See size specifications for a list of sizes, designated by "XT" under Construction. Features and benefits Aggressive Sidewall and Open Tread Block Design Delivers tough looks and even tougher performance in dirt, mud, or snow, while maintaining a quiet ride. Wear-Resistant Tread Compound Extends tread life and durability. Deep Tread Grooves with Stone-Ejecting Blocks Enhances mud and snow traction. Forces stones from grooves. Tie Bars Between Blocks Stabilizes tread blocks. Improves dry braking. Reduces irregular wear. Polygonal Blocks and Zigzag Sipes Contributes to excellent snow performance.