Cooper 170307006 Discoverer STT Pro Mud Terrain Tire 40X13.50R17 121Q

The Cooper Discoverer STT Pro is an off-road maximum traction light truck tire designed for drivers of pickup trucks, Jeeps, and SUVs who demand confident, go-anywhere capability without sacrificing on-road performance. This 40X13.50R17 tire features a diameter of 39.76 inches, a section width of 13.6 inches, and a tread depth of 22/32 inches, with a maximum load capacity of 3195 lbs at 35 psi.

Advanced Tread Design:

• Aggressive, high-void tread pattern molded from a chip- and tear-resistant compound with deep starting tread depths
• Hybrid 3-2 tread pattern controls noise and enhances stability, while alternate shoulder lugs improve traction on mud and soft surfaces
• Alternating cleats and scoops in the shoulder lugs enhance traction in mud and other soft terrain
• Mud release dimples help the tire self-clean during off-road use
• Anti-stone retention ribs at the base of the tread grooves eject small rocks to prevent punctures from stone drills

Construction and Durability:

• Armor-Tek3 Construction technology features a robust three-ply polyester casing to improve puncture resistance, supported by two wide steel belts reinforced by a single nylon cap ply
• Chip/cut resistant compound resists punctures and impacts encountered on muddy and rocky terrain
• Load Range C (6 Ply) construction with a 121Q service description

Wide lateral and circumferential channels aid hydroplaning resistance, while in-block siping creates additional biting edges for improved grip in slippery conditions. This tire features a black sidewall (BSW) and is suitable for all-season use.