Cooper Discoverer AT3 LT All-Terrain Light Truck & SUV Tire

The Cooper Discoverer AT3 LT is an all-terrain, all-season tire purpose-built for pickup trucks, work vehicles, and full-size SUVs that demand rugged durability without sacrificing on-road refinement. Engineered to bridge the gap between serious off-road capability and everyday driving comfort, the Discoverer AT3 LT handles dirt, gravel, mud, and urban pavement with equal confidence — making it a versatile choice for job sites and the open highway alike. The tire carries the Three-Peak Mountain Snowflake (3PMSF) symbol, certifying severe snow service performance for true year-round confidence.

Durable Tread Technology

• Cut and Chip Resistant Compound: A shred-resistant, silica-enhanced tread compound delivers superior protection against cuts and chips on sharp gravel and rocky surfaces, extending tread life in demanding off-road conditions.
• Next-Generation All-Terrain Tread Pattern: Optimized block geometry enhances traction across multiple surfaces — including mud, gravel, and pavement — while promoting consistent, even wear throughout the tire's service life.
• Stone Ejector Ledges: Strategically placed ledges actively expel stones and debris from tread grooves, guarding against stone drilling and maintaining reliable traction on rocky terrain.
• Rugged Traction Shoulders: Alternating scoop and cleat shoulder lugs deliver enhanced grip on rocks and in loose soil during off-road maneuvers.

On-Road Comfort and Control

• Whisper Grooves™ Technology: Specially engineered grooves act as a sound barrier between tread blocks, significantly reducing road noise for a quieter, more refined highway experience.
• Even Wear Arc™ Technology: Optimizes the contact footprint to balance pressure across the entire contact patch, promoting uniform treadwear and maintaining responsive handling throughout the tire's life.
• Hydroplaning Resistance: Wide circumferential channels and lateral notches efficiently evacuate water from the contact patch, enhancing wet-weather safety and braking confidence.
• Reinforced Internal Structure: A robust two-ply polyester casing paired with single-ply nylon reinforcement over two high-strength steel belts maintains ideal tire shape under heavy loads and towing demands, delivering steering responsiveness and high-speed stability.

All-Season Winter Capability

• Earns the Three-Peak Mountain Snowflake (3PMSF) symbol, certifying severe snow service performance.
• Snow Groove technology with saw-tooth block edges improves traction on light snow and slush.
• Next-generation siping provides additional biting edges for enhanced grip in wet and wintry conditions.
• Severe-service LT construction engineered to meet the demands of light trucks and commercial applications.

Warranty and Assurance

• 60,000-Mile Treadwear Warranty on LT-metric sizes, backed by Cooper Tire
• 45-Day Road Test satisfaction guarantee
• Standard limited warranty against defects in workmanship and materials

The Cooper Discoverer AT3 LT delivers the versatility and dependability that light truck and SUV owners demand — whether hauling heavy loads, navigating job sites, or exploring backcountry trails. Backed by Cooper's long-standing reputation for quality and performance, the Discoverer AT3 LT is a proven all-terrain tire built to go wherever the job takes you.