--- product_id: 36181736 title: "Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire" brand: "cooper" price: "Β₯299291" currency: JPY in_stock: true reviews_count: 10 category: "Cooper" url: https://www.desertcart.jp/products/36181736-cooper-discoverer-s-t-maxx-all-season-lt285-75r17-121 store_origin: JP region: Japan --- # 10-ply Armor-Tek3 durability Stone ejector ribs prevent retention All-season, year-round traction Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire **Brand:** cooper **Price:** Β₯299291 **Availability:** βœ… In Stock ## Summary > πŸ›ž Conquer every road, every season β€” toughness that won’t quit! ## Quick Answers - **What is this?** Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire by cooper - **How much does it cost?** Β₯299291 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/36181736-cooper-discoverer-s-t-maxx-all-season-lt285-75r17-121) ## 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 - β€’ **Quiet Power:** Hybrid 4-5 rib tread design delivers low noise and smooth on-road stability - β€’ **All-Season Confidence:** Engineered for year-round performance on highways and rugged terrain alike - β€’ **Stone-Free Adventures:** Innovative stone ejector ribs keep your tread clear and damage-free - β€’ **Commercial Grade Ready:** Supports up to 3,195 lbs load capacity with a robust 80 psi max pressure - β€’ **Maxx Toughness, Maxx Traction:** 10-ply Armor-Tek3 construction for unmatched sidewall and tread strength ## Overview The Cooper Discoverer S/T Maxx LT285/75R17 tire is a commercial-grade, all-season radial tire designed for light trucks and high-torque vehicles. Featuring a 10-ply Armor-Tek3 carcass for superior durability, cut and chip resistant tread compound, and stone ejector ribs, it delivers exceptional off-road traction and on-road stability. With a load capacity of 3,195 lbs and a max pressure of 80 psi, it’s engineered to handle tough terrains while maintaining low noise and long tread life. ## Description When the going gets tough, you need a tire equipped to handle rough terrain. The Cooper Discoverer S/T Maxx All-Season LT285/75R17 121Q Tire provides, long, even wear when you’re on the highway and excellent performance during all seasons, on or off road. The Cooper Discoverer S/T Maxx features Cooper’s proven and reliable 3-ply Armor-Tek3 carcass construction combined with a proprietary cut and chip resistant tread compound. With that combination along with its modern hybrid 4-5 rib tread design and unique tread features, the S/T Maxx is destined to be a commercial grade traction tire that will perform in the toughest terrains while retaining remarkable on-road traction, stability and low noise characteristics. The Discoverer S/T Maxx is designed for commercial light truck and high-powered torque vehicles. Cooper's proven, class-leading 3-ply Armor-Tek3 construction contributes to the durability of the S/T Maxx by adding strength to the sidewall and tread area. A unique angled ply construction absorbs and helps dissipate tire impact forces that can damage a tire in harsh off-road conditions. Stone ejector ribs help discharge debris and resist stone retention. The Cooper Discoverer S/T Maxx is Maxx Toughness, Maxx Traction... No Compromises! Review: Great tire - Have these tires on my 2020 3500 Denali dually, great ride quality and very minimal road noise. Have around 55,000 miles (mostly towing a 40' flatbed gooseneck) on them now and they are about 30% tread. Will be buying the same tires again! Review: Great product but inspect what you get from desertcart! - The tires are AWESOME! I am running them on a 2013 Jeep Wrangler Sport with a 2.5" lift. They look awesome, they are extremely quiet (even with the top off) and the traction is fantastic. They are as aggressive as any MT tire I considered with none of the draw backs. I have put almost 1,000 miles on the tires since I put them on the Jeep and I have no complaints. We have had a VERY wet spring and these things shed water like crazy. If you are considering these tires, stop considering and start buying! My only complaints had nothing to do with the tires, they were issues with desertcart. The issues were as follows: 1) I ordered five tires. I was billed for each tire individually instead of all at once. 2) The tires all came from different locations around the country and arrived at different times. 3) Three of the tires I received were visibly worn and cupped! I immediately called desertcart and they paid to ship them back and the same day shipped me out three new ones. This ended up delaying mounting them by about two weeks. ## Features - All-Season Commercial Traction Tire - Designed for tough terrain, including rocks and gravel, with on-road stability and performance - Tread design helps to prevent stone retention - Armor Tek3 construction for added tire durability - Cut and chip resistant tread compound/composition ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LWN5O71 | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #131,086 in Automotive ( See Top 100 in Automotive ) #130 in Light Truck & SUV All-Terrain & Mud-Terrain Tires | | Brand | Cooper | | Brand Name | Cooper | | Construction Type | Radial | | Customer Reviews | 4.6 out of 5 stars 318 Reviews | | Global Trade Identification Number | 00029142850496, 00291428504960 | | Included Components | Tire Only | | Item Diameter | 34.06 inches | | Item Dimensions | 33.83 x 33.83 x 11.22 inches | | Item Type Name | Tire | | Item Weight | 63.9 pounds | | Load Capacity | 3195 pounds | | Load Index | 118 | | Load Range | E | | Manufacturer | Cooper | | Manufacturer Part Number | 170090004 | | Manufacturer Warranty Description | Standard Limited Warranty | | Maximum Pressure | 80 psi | | Model Number | 170090004 | | OEM Equivalent Part Number | 170090004 | | Ply | 10-Ply | | Rim Size | 17 inches | | Seasons | Year Round | | Section Width | 28.5 centimeters | | Size | LT285/75R17 121/118Q | | Speed Rating | Q | | Tire Aspect Ratio | 75 | | Tire Diameter | 34.06 | | Tread Depth | 18.5 thirty_seconds_inches | | Tread Type | Non-Directional | | UPC | 029142850496 291428504960 | | Unit Count | 1 Count | | Vehicle Tire ISO Metric Size Description | 285/75R17 | ## Product Details - **Brand:** Cooper - **Load Capacity:** 3195 pounds - **Load Index:** 118 - **Rim Size:** 17 inches - **Section Width:** 28.5 centimeters - **Size:** LT285/75R17 121/118Q - **Speed Rating:** Q - **Tire Aspect Ratio:** 75 - **Tread Depth:** 18.5 thirty_seconds_inches - **Tread Type:** Non-Directional ## Images ![Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire - Image 1](https://m.media-amazon.com/images/I/61sghwFM17L.jpg) ![Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire - Image 2](https://m.media-amazon.com/images/I/812jwyQoewL.jpg) ![Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire - Image 3](https://m.media-amazon.com/images/I/81kkhUwsgYL.jpg) ![Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire - Image 4](https://m.media-amazon.com/images/I/91Sn4UJO6LL.jpg) ![Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q Tire - Image 5](https://m.media-amazon.com/images/I/61QbiECy1sL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great tire *by A***N on May 25, 2025* Have these tires on my 2020 3500 Denali dually, great ride quality and very minimal road noise. Have around 55,000 miles (mostly towing a 40' flatbed gooseneck) on them now and they are about 30% tread. Will be buying the same tires again! ### ⭐⭐⭐⭐⭐ Great product but inspect what you get from Amazon! *by W***. on May 15, 2015* The tires are AWESOME! I am running them on a 2013 Jeep Wrangler Sport with a 2.5" lift. They look awesome, they are extremely quiet (even with the top off) and the traction is fantastic. They are as aggressive as any MT tire I considered with none of the draw backs. I have put almost 1,000 miles on the tires since I put them on the Jeep and I have no complaints. We have had a VERY wet spring and these things shed water like crazy. If you are considering these tires, stop considering and start buying! My only complaints had nothing to do with the tires, they were issues with Amazon. The issues were as follows: 1) I ordered five tires. I was billed for each tire individually instead of all at once. 2) The tires all came from different locations around the country and arrived at different times. 3) Three of the tires I received were visibly worn and cupped! I immediately called Amazon and they paid to ship them back and the same day shipped me out three new ones. This ended up delaying mounting them by about two weeks. ### ⭐⭐⭐⭐⭐ great performance tire *by A***R on June 6, 2025* great tire - good value long life-look great - delivered on time ## Frequently Bought Together - Cooper Discoverer S/T Maxx All-Season LT285/75R17 121/118Q 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/36181736-cooper-discoverer-s-t-maxx-all-season-lt285-75r17-121](https://www.desertcart.jp/products/36181736-cooper-discoverer-s-t-maxx-all-season-lt285-75r17-121) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-02*