--- product_id: 610081152 title: "Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire" brand: "cooper" price: "$2020.29" currency: USD in_stock: true reviews_count: 5 url: https://www.desertcart.us/products/610081152-discoverer-stt-pro-all-season-31x10-50r15lt-109q-tire store_origin: US region: United States of America --- # 31-inch diameter for commanding presence All-season tread for year-round traction Armor Tek3 sidewall tech for ultimate durability Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire **Brand:** cooper **Price:** $2020.29 **Availability:** ✅ In Stock ## Summary > 🛞 Elevate your off-road game with unstoppable all-season toughness! ## Quick Answers - **What is this?** Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire by cooper - **How much does it cost?** $2020.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/610081152-discoverer-stt-pro-all-season-31x10-50r15lt-109q-tire) ## Best For - cooper enthusiasts ## Why This Product - Trusted cooper brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Season Versatility:** Engineered to deliver superior traction on wet, dry, muddy, or snowy roads without compromise. - • **Stone Armor Technology:** Innovative tread channels expel stones and debris, keeping your ride smooth and damage-free. - • **Heavy-Duty Load Capacity:** 10-ply, 109 load index supports over 1,000 kg—built for serious off-roaders and heavy loads. - • **Unmatched Off-Road Dominance:** Conquer rugged terrain with deep Climber Cleats and Mud Slingers 2.0 for relentless grip. - • **Armor Tek3 Sidewall Protection:** Reinforced radial construction resists punctures and sidewall damage on the toughest trails. ## Overview The Cooper Discoverer STT Pro 31X10.50R15LT 109Q is a premium all-season off-road tire featuring Armor Tek3 sidewall technology, aggressive tread design with Climber Cleats and Mud Slingers 2.0, and Stone Armor channels for superior durability and traction. Rated for heavy loads with a 10-ply construction and 109 load index, it delivers exceptional performance on rugged terrain without sacrificing on-road handling. ## Description The Cooper Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire is the most extreme all-season, off-road tire Cooper offers to date, providing remarkable off-road performance without sacrificing on-road traction. The Discoverer STT PRO tire delivers best-in-class off-road performance, empowering the extreme off-roader to take on the toughest challenges. Patented Armor Tek3 tire technology adds strength to the tire sidewall, providing increased resistance to damage while driving over boulders and uneven, tough terrain. The Discoverer STT Pro comes with rubber formulated to combat shredding and damage from stones and off-road obstacles. The ROCK CLIMBER SIDEWALL gets max traction to help conquer even the toughest obstacles with deep ‘Climber Cleats’ and Flex Grooves built into the side of the tire that grip jagged rocks and power through thick mud. The MUD SLINGERS 2.0 are deep, wide trenches with additional notches throughout the tread combine to give you more grip to power through and help continuously clear thick mud from the tire. The EARTH DIGGERS can tackle tricky terrain with large blocks with alternating mud scoops that forcefully dig into loose dirt, sand or sticky mud. The STONE ARMOR TECHNOLOGY provides the ultimate durability with channels, ridges, and edges designed to help defend against sharp rocks and debris while expelling lodged stones. ## Features - All-Season Off-Road Traction Tire - The most extreme all-season, off-road tire Cooper offers to date - Provides remarkable off-road performance without sacrificing on-road traction - Tread design helps to prevent stone retention - Armor Tek3 construction for added tire durability - The shoulder of the tire was designed with soft surface cleats and mud scoops - Standard Limited Warranty ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B014HH7B9E | | Automotive Fit Type | Vehicle Specific Fit | | Brand Name | Cooper | | Construction Type | Radial | | Customer Reviews | 4.6 4.6 out of 5 stars (689) 4.6 out of 5 stars | | Global Trade Identification Number | 00029142829454, 00291428294540 | | Included Components | Tire Only | | Item Diameter | 30.8 Inches | | Item Dimensions | 78.1 x 78.1 x 27.2 centimeters | | Item Type Name | Tire | | Item Weight | 46.11 Pounds | | Load Capacity | 1029.66 kg | | Load Index | 109 | | Manufacturer | Cooper | | Manufacturer Part Number | 170110034 | | Maximum Pressure | 50 Pound per Square Inch | | Model Number | 170110034 | | Oem Equivalent Part Number | 9023638 | | Ply | 10-Ply | | Rim Size | 15 Inches | | Seasons | Year Round | | Section Width | 10.5 Inches | | Size | 31X10.50R15LT 109Q | | Spare Tire Mounting Location | Front or Rear | | Speed Rating | Q | | Tire Aspect Ratio | 10.5 | | Tire Diameter | 31 | | Tread Depth | 20 32nds | | Tread Type | Asymmetrical | | Unit Count | 1 Count | | Upc | 826825966358 291428294540 029142829454 | | Vehicle Tire Iso Metric Size Description | 31/10.50R15 | ## Product Details - **Brand:** Cooper - **Seasons:** Year Round - **Size:** 31X10.50R15LT 109Q - **Rim size:** 15 Inches - **Tyre aspect ratio:** 10.5 ## Images ![Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire - Image 1](https://m.media-amazon.com/images/I/81yAZbtaAIL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Do these have white letters?** A: This is going to be an all black sidewall. Thanks! **Q: are these 10 ply tires?** A: Listing states 10 ply **Q: How badly will my MPGs drop with these tires?** A: I lost almost 20%. That being said... They are awesome tires. **Q: Will these fit on a 15x8 wheel?** A: Hello, These will not fit a 15x8 wheel. This tire fits a15x8.5" to 15x11" wheel. Thanks, ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Tires *by on Reviewed in the United States 18 December 2025* Bought a set of 4 for my 2019 Nissan Pathfinder. The delivery was quick. They are exceptional. They look great on my car, and the ride is smooth without a lot of road noise coming from the tires. The 65,000 mile warranty is a comfort of knowing I have bought a quality tire. Definitely recommend ### ⭐⭐⭐⭐⭐ Gomme e venditore “su ruote “ok. *by on Reviewed in Italy 16 April 2019* gomme di qualità e venditore preciso. ### ⭐⭐⭐⭐⭐ Great tyres, conveniently & quickly delivered! *by on Reviewed in Germany 3 August 2018* Needed new tyres for my LR Defender110...bought some other ones (no names!) from another company! They arrived WRONG SIZE..& it took 3 weeks for them to admit & collect & return payment. Amazon does give you "peace of mind" in that direction - and the tyres are really excellent! A good mix between off-road and road use...shame they are NOT winter-rated!Two years on...(2020) tyres are all good, hard cornering on a wet road they'll slide - but predictably! Good in winter as well - though not EU winter-rated! Wear after 35000Km is very acceptable. Use off road is excellent, fantastic grip (shattered half-shaft actually!). Recommended buy especially if you do any off road/mud travelling ## Frequently Bought Together - Cooper Discoverer STT Pro All-Season 31X10.50R15LT 109Q Tire - MIKKUPPA 1/2-20 Lug Nuts - Replacement for 1987-2018 Jeep Wrangler JK, 2002-2012 Jeep Liberty, 1993-2010 Jeep Grand Cherokee Aftermarket Wheel - 20pcs Black Closed End Solid Lug Nuts - Rough Country Black Steel 15x8 | 5x4.5 | -19mm-RC158545 Wheel with Painted and Center Cap is not Included. (15 x 8. inches /5 x 4 inches, -19 inches Offset) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/610081152-discoverer-stt-pro-all-season-31x10-50r15lt-109q-tire](https://www.desertcart.us/products/610081152-discoverer-stt-pro-all-season-31x10-50r15lt-109q-tire) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-14*