Cooper 170153034 Discoverer STT Pro LT315/75R16 127/124K Mud Terrain Tire Red Line

The Cooper Discoverer STT Pro is Cooper's most capable mud terrain tire, engineered to deliver exceptional traction across the harshest off-road environments while maintaining composed, manageable performance on paved roads. Built in size LT315/75R16 with a 127/124K service description and a distinctive Red Line sidewall, this 10-ply Load Range E tire is purpose-built for light trucks, SUVs, and off-road rigs that demand the most from their rubber.

Key Features:

• Armor-Tek3 3-Ply Construction — Provides 50% more protection against impact damage compared to standard 2-ply tires, dramatically increasing sidewall and carcass durability on sharp rock and debris
• Alternating 3-2 Center Rib Tread Pattern — The hybrid inner tread design reduces road noise and increases on-road stability while delivering superior traction in mud, soft trails, and loose surfaces
• Flex Groove Technology — Helps absorb and dampen the impact of potholes, pavement inconsistencies, and gravel for a more compliant on-road ride
• Side Biters (Sidewall Cleats) — Large, specially designed rubber cleats on the shoulder sidewall area enhance lateral traction and grip when climbing or crawling over rocks and obstacles
• Asymmetrical Mud Scallops — Alternating lug scallops channel mud directly into the mud scoops, allowing the tire to self-clean and pull through heavy mud with ease
• Silica Tread Compound — Enhances wet-surface grip and overall tread wear performance
• M+S Rated — Meets Mud and Snow service requirements
• Red Line Sidewall — Bold aesthetic identifier distinguishing this variant

Tire Specifications:

• Size: LT315/75R16
• Load Range: E (10-Ply Rated)
• Service Description: 127/124K
• Overall Diameter: 34.53 in.
• Section Width: 12.6 in.
• Tread Depth: 20.5/32 in.
• Maximum Load: 3,860 lbs @ 65 PSI
• Approved Rim Width: 8–11 in.
• Sidewall: Red Line

The Discoverer STT Pro pairs aggressive off-road capability with enough on-road refinement for daily driving use, making it a well-rounded choice for drivers who refuse to compromise between trail performance and everyday usability.