Cooper 170139006-K Discoverer STT Pro Mud-Terrain Tire 37X13.50R18

The Cooper Discoverer STT Pro is an extreme mud-terrain tire engineered for serious off-road enthusiasts who demand maximum performance in the harshest conditions. This 37x13.50R18 tire delivers exceptional traction on mud, dirt, rock, and soft surfaces while maintaining surprisingly good on-road manners and a relatively quiet ride for an aggressive mud tire.

Advanced Construction:

• Armor-Tek3 Construction: Three-ply polyester casing provides superior puncture resistance and durability against trail hazards
• Twin Steel Belts: Reinforced with spirally wrapped nylon for enhanced strength and stability
• Load Range D (8-Ply Rated): Maximum load capacity of 3,525 lbs per tire at 50 PSI

Tread Design Features:

• Hybrid 3-2 Tread Pattern: Alternating center rib design controls road noise and enhances on-highway stability
• Alternating Shoulder Lugs: Aggressive side-biters improve traction in mud and on soft, uneven terrain
• Mud Release Dimples: Unique tread features help shed loose soil and prevent mud pack-up
• Wide Circumferential Grooves: Efficiently channel water away from the contact patch to resist hydroplaning
• Anti-Stone Retention: Tread design prevents stone retention, protecting the casing and extending tire life
• Deep 22/32" Tread Depth: Provides long wear life and sustained off-road performance

Specifications:

• Size: 37x13.50R18 (Overall diameter: 36.77 inches)
• Service Description: 124Q (Load Index 124, Speed Rating Q - up to 99 mph)
• Sidewall: Black Sidewall (BSW)
• Approved Rim Width: 8.5-11 inches
• Weight: 82 lbs per tire

Ideal for pickup trucks, Jeeps, and SUVs, the Cooper Discoverer STT Pro balances extreme off-road capability with everyday drivability. Whether you're conquering rock crawling trails or navigating daily commutes, this tire delivers the versatility and durability serious off-roaders demand.