--- product_id: 22968196 title: "Discoverer STT Pro All-Season LT285/65R18 125/122Q Tire" brand: "cooper" price: "$1783.20" currency: USD in_stock: true category: "Cooper" url: https://www.desertcart.us/products/22968196-discoverer-stt-pro-all-season-lt285-65r18-125-122q-tire store_origin: US region: United States of America --- # 32.9-inch diameter for commanding presence All-season tread for year-round traction Armor Tek3 sidewall tech for ultimate durability Discoverer STT Pro All-Season LT285/65R18 125/122Q Tire **Brand:** cooper **Price:** $1783.20 **Availability:** ✅ In Stock ## Summary > 🛞 Elevate your off-road game with unstoppable all-season toughness! ## Quick Answers - **What is this?** Discoverer STT Pro All-Season LT285/65R18 125/122Q Tire by cooper - **How much does it cost?** $1783.20 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/22968196-discoverer-stt-pro-all-season-lt285-65r18-125-122q-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 for year-round performance, so your adventure never pauses—rain, shine, or snow. - • **Stone Armor Technology:** Innovative channels and ridges expel lodged stones, preventing damage and maintaining peak traction. - • **Armor Tek3 Construction:** Reinforced sidewalls resist punctures and abrasions, keeping you unstoppable on the toughest terrain. - • **Heavy-Duty Load Capacity:** Supports up to 3,640 lbs with a robust 10-ply radial design, perfect for rugged trucks and SUVs. - • **Unmatched Off-Road Dominance:** Conquer rocks, mud, and sand with specialized tread tech like Rock Climber Sidewalls and Mud Slingers 2.0. ## Overview The Cooper Discoverer STT Pro LT285/65R18 125/122Q is a premium all-season off-road tire featuring a 32.9-inch diameter, Armor Tek3 reinforced sidewalls, and advanced tread designs like Rock Climber Sidewalls and Mud Slingers 2.0. Built for extreme durability and year-round traction, it supports heavy loads up to 3,640 lbs and excels in challenging terrains without compromising on-road performance. ## Description The Cooper Discoverer STT Pro All-Season LT285/65R18 125Q 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B017XTULAO | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #251,586 in Automotive ( See Top 100 in Automotive ) #337 in Light Truck & SUV All-Terrain & Mud-Terrain Tires | | Brand Name | Cooper | | Construction Type | Radial | | Customer Reviews | 4.6 4.6 out of 5 stars (154) | | Global Trade Identification Number | 00029142829638, 00291428296384 | | Included Components | Tire Only | | Item Diameter | 32.91 Inches | | Item Dimensions | 32.91 x 32.91 x 11.8 inches | | Item Type Name | Tire | | Item Weight | 57 Pounds | | Load Capacity | 3640 Pounds | | Load Index | 125.0 | | Load Range | E | | Manufacturer | Cooper | | Manufacturer Part Number | 170118034 | | Manufacturer Warranty Description | Standard Limited Warranty | | Maximum Pressure | 80 Pound per Square Inch | | Model Number | 170118034 | | OEM Equivalent Part Number | COOP-90000023656 | | Ply | 10-Ply | | Rim Size | 18 Inches | | Seasons | Year Round | | Section Width | 285 Millimeters | | Size | LT285/65R18 125/122Q | | Spare Tire Mounting Location | Front or Rear | | Speed Rating | Q | | Tire Aspect Ratio | 65.0 | | Tire Diameter | 32.909999999999997 | | Tread Depth | 19 32nds | | Tread Type | Non-Directional | | UPC | 291428296384 029142829638 | | Unit Count | 1.0 Count | | Vehicle Tire ISO Metric Size Description | 285/65R18 | ## Product Details - **Brand:** Cooper - **Load Capacity:** 3640 Pounds - **Load Index:** 125.0 - **Rim Size:** 18 Inches - **Section Width:** 285 Millimeters - **Size:** LT285/65R18 125/122Q - **Speed Rating:** Q - **Tire Aspect Ratio:** 65.0 - **Tread Depth:** 19 32nds - **Tread Type:** Non-Directional ## Images ![Discoverer STT Pro All-Season LT285/65R18 125/122Q 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, ## Frequently Bought Together - Cooper Discoverer STT Pro All-Season LT285/65R18 125/122Q Tire - CKAuto 25 Pieces TR416 Metal Valve Stems Outer Mount Fits .453" & .625" Rim Holes Long 1 1/2", Silver - GAsupply Black Lug Nuts, 1/2-20 Closed End Bulge Acorn Lug Nuts 3/4 inch 19mm Hex 1.38 inch Tall 60 Degree Conical Seat --- ## 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/22968196-discoverer-stt-pro-all-season-lt285-65r18-125-122q-tire](https://www.desertcart.us/products/22968196-discoverer-stt-pro-all-season-lt285-65r18-125-122q-tire) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-16*