Cooper 170074004 Discoverer ST Maxx All-Terrain Tire LT255/85R16

The Cooper Discoverer ST Maxx is a commercial-grade all-terrain light truck tire engineered for drivers who demand exceptional performance both on and off the road. This rugged tire is designed for pickup trucks, SUVs, and vans that navigate job sites, gravel roads, and challenging off-road terrain while delivering confident performance on paved roads in all weather conditions.

Advanced Construction and Durability:

• Armor-Tek3 Construction: Features a robust 3-ply sidewall that is 66% stronger and 2.5 times more tear-resistant than standard construction, providing superior puncture and abrasion resistance
• Cut and Chip-Resistant Compound: Proprietary blend of natural and silica-based rubber delivers excellent durability on gravel and rocky terrain while providing enhanced wet-weather traction
• 6-Ply Tread Design: Consists of three polyester plies, two steel belts, and one nylon reinforcement for high-speed durability and impact resistance
• Generous 18.5/32-inch Tread Depth: Offers exceptional traction potential and extended tread life

Traction and Performance Features:

• Hybrid 4-5 Rib Tread Pattern: Symmetric design alternates between 4-rib and 5-rib patterns to randomize tread block impacts, significantly reducing road noise while promoting even wear
• Stone Ejector Ribs: Lateral ribs between tread blocks help discharge rocks and prevent stone drilling that can damage the tire
• Multiple Block Edges: Open tread pattern provides clawing traction on soft, uneven surfaces including dirt, rocks, gravel, mud, and sand
• In-Block Siping: Creates biting edges for enhanced traction in wet conditions and improves hydroplaning resistance
• Aggressive Sidewall Buttress: Provides additional off-pavement traction and sidewall protection

Size LT255/85R16 Specifications:

• Service Description: 123/120Q (load index 123/120, speed rating Q - up to 99 mph)
• Load Range: E (10-ply rated)
• Sidewall: Black sidewall (BSW)
• Overall Diameter: 33.06 inches
• Section Width: Approximately 10.0 inches
• Approved Rim Width: 6.5-8.0 inches (measured rim width: 7.0 inches)
• Maximum Load: 3,417 lbs per tire

All-Season Capability: The Discoverer ST Maxx is mud-and-snow rated and can accept optional #15 metal studs for enhanced traction on packed snow and ice. Its balanced 50/50 on-road/off-road design makes it ideal for drivers who need a versatile tire that excels in diverse conditions without compromising comfort or longevity.