Cooper 170070004 Discoverer ST Maxx LT275/70R18 All-Terrain Tire 125/122Q

The Cooper Discoverer S/T Maxx is a commercial-grade all-terrain tire engineered for pickup trucks, SUVs, full-size crossovers, and vans that demand exceptional durability both on and off the road. This LT275/70R18 tire delivers aggressive traction for job sites, gravel roads, and backcountry trails while maintaining confident performance on paved highways in all seasons, including snow.

Advanced Construction & Durability:

• Armor Tek3® Construction: Cooper's proven 3-ply carcass design with two 90-degree radial body plies plus a third angled ply strengthens the sidewall and tread area, absorbing impact forces in harsh off-road conditions
• Cut and Chip Resistant Compound: Proprietary tread formulation blends natural rubber and silica for exceptional wet traction on highways and superior resistance to cuts and chips on rocky terrain
• 10-Ply Rating (Load Range E): Heavy-duty construction supports commercial applications with 125/122Q load rating and 80 PSI maximum pressure

Traction & Performance Features:

• Hybrid 4-5 Rib Design: Symmetrical tread pattern alternates between four and five ribs for reduced road noise and even wear
• Stone Ejector Ribs: Specialized ribs combined with non-parallel groove walls discharge debris and resist stone retention to prevent damage
• In-Block Siping: Multiple sipes create biting edges for wet traction, while high-void pattern provides excellent hydroplaning resistance
• Studdable Design: Accepts optional #15 metal studs for enhanced traction on packed snow and ice
• M+S Rated: Meets Mud and Snow performance standards for all-season capability

Specifications:

• Size: LT275/70R18
• Load Index: 125/122 (single/dual)
• Speed Rating: Q (99 mph)
• Overall Diameter: 33.39 inches
• Section Width: 11.1 inches
• Tread Depth: 18.5/32 inches
• Approved Rim Width: 7-8.5 inches
• Sidewall: Black Sidewall (BSW)

Backed by Cooper's standard limited warranty, the Discoverer S/T Maxx combines commercial-grade toughness with remarkable on-road stability and low noise characteristics, making it an ideal choice for drivers who refuse to compromise between off-road capability and daily driving comfort.