--- product_id: 110479572 title: "Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q" brand: "cooper" price: "¥125720" currency: JPY in_stock: false reviews_count: 5 url: https://www.desertcart.jp/products/110479572-cooper-discoverer-stt-pro-rwl-lt315-70-r17-121-118q store_origin: JP region: Japan --- # Fuel Efficiency E Rating Low Noise Emission 80dB Proudly Made in USA Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q **Brand:** cooper **Price:** ¥125720 **Availability:** ❌ Out of Stock ## Summary > 🚙 Conquer every trail with quiet confidence and unstoppable grip! ## Quick Answers - **What is this?** Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q by cooper - **How much does it cost?** ¥125720 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/110479572-cooper-discoverer-stt-pro-rwl-lt315-70-r17-121-118q) ## 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 - • **Whisper-Quiet Ride:** Engineered to minimize road noise, keeping your drive smooth and focused. - • **Long Haul Durability:** Proven 42,000+ mile tread life means fewer replacements and more adventures. - • **Trail-Ready Traction:** Aggressive tread design bites mud and rocks for unmatched off-road agility. - • **American-Made Quality:** Crafted in the USA for premium reliability and rugged toughness. - • **Fuel-Savvy Performance:** E-rated fuel efficiency helps you go further with less fuel burn. ## Overview The Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q is a rugged, radial off-road tire designed for summer use. It features an aggressive tread pattern for superior mud and trail performance, an 80dB noise emission rating for a quieter ride, and an E rating for fuel efficiency. Manufactured in the USA, this tire offers proven durability with over 42,000 miles of tread life, making it a top choice for adventurous professionals seeking reliable, high-performance off-road capability. ## Description Cooper Discoverer STT Pro P.O.R RWL - 315/70R17 121Q - Summer Tyres | Cooper Discoverer STT PRO P.O.R RWL - 315/70R17 121Q - Summer Tyres | Cooper Discoverer STT Pro P.O.R RWL - 315/70R15/70R1. 7 111 Q - Summer tyres Review: Quiet and rugged. I was super leiry of buying tires on line. These tires are amazing. Very little if any road noise. Went from 265 to 315. Felt very little loss of power. The difference on the trails were significant. These tires bite and release the mud better than I could have imagined. Absolutely love the look, agility, and off road capabilities. Would highly recommend. I have tried uploading a picture but it won't let me. Anywho. They are amazing Review: My first set of the Discovery STT Pro lasted approximately 42,000 miles and still had enough tread to go another year. I decided to swap out my old tires because they have been on my Jeep for almost 10 years and due to an alignment issue there was some cupping. The new tires are amazing. There is very little road noise and the Jeep handles very well. I think as these tires wear out the road noise will increase (I believe this has been typical of other tires I've had on my previous Jeep). Overall I am very happy with the previous tread life of these tires and impressed with their on-road performance. ## Features - Fuel efficiency: E - Wet grip: E - Noise emission: 80db - Country of origin: United States ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Cooper | | Brand | Cooper | | Model | Discoverer STT PRO POR | | Item model number | 170119034 | | Manufacturer part number | 170119034 | | Section Width | 315 Millimetres | | Construction | radial | | Rim Width | 17 Inches | | Item Weight | 31.6 kg | ## Product Details - **Brand:** Cooper - **Size:** LTLT315/70R17 121/118Q - M+S - **Section width:** 315 Millimetres - **Load capacity:** 1450 kg - **Tread type:** Asymmetrical - **Rim width:** 17 Inches - **Tyre diameter:** 34.57 - **Item dimensions L x W x H:** 87.8 x 87.8 x 32 centimetres - **Item weight:** 69.75 Pounds - **Automotive Fit Type:** Vehicle Specific Fit ## Images ![Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q - Image 1](https://m.media-amazon.com/images/I/81aQX-ppp2L.jpg) ![Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q - Image 2](https://m.media-amazon.com/images/I/91YhnE1-VBL.jpg) ![Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q - Image 3](https://m.media-amazon.com/images/I/81JGm+U5UUL.jpg) ![Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q - Image 4](https://m.media-amazon.com/images/I/81xam6Rzz6L.jpg) ![Cooper Discoverer STT PRO RWL LT315/70 R17 121/118Q - Image 5](https://m.media-amazon.com/images/I/81wPJoHoKWL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Review *by G***K on 25 January 2025* Quiet and rugged. I was super leiry of buying tires on line. These tires are amazing. Very little if any road noise. Went from 265 to 315. Felt very little loss of power. The difference on the trails were significant. These tires bite and release the mud better than I could have imagined. Absolutely love the look, agility, and off road capabilities. Would highly recommend. I have tried uploading a picture but it won't let me. Anywho. They are amazing ### ⭐⭐⭐⭐⭐ Review *by J***N on 12 October 2023* My first set of the Discovery STT Pro lasted approximately 42,000 miles and still had enough tread to go another year. I decided to swap out my old tires because they have been on my Jeep for almost 10 years and due to an alignment issue there was some cupping. The new tires are amazing. There is very little road noise and the Jeep handles very well. I think as these tires wear out the road noise will increase (I believe this has been typical of other tires I've had on my previous Jeep). Overall I am very happy with the previous tread life of these tires and impressed with their on-road performance. ### ⭐⭐⭐⭐⭐ Review *by C***S on 15 December 2023* The tires are excellent for rock crawling, playing in the mud and sand excellent traction on gravel roads deep snow and slush. So far I have driven 6,000 highway miles on them and they still have the nipples on the tires. You must rotate them every 6,000 miles. And make sure they're still balanced. Downside is even though the tires are factory syped slowing down on wet roads and ice is terrible but you expect those two things when you order mud tires that's not made for either of those things for stopping power. ## Frequently Bought Together - Cooper Discoverer STT Pro All-Season LT315/70R17 121/118Q Tire - Method Race Wheels 305 NV Method Bronze/Black Street Loc 17x8.5" 8x6.5", 0mm offset 4.75" Backspace, MR30578580900 --- ## 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.jp/products/110479572-cooper-discoverer-stt-pro-rwl-lt315-70-r17-121-118q](https://www.desertcart.jp/products/110479572-cooper-discoverer-stt-pro-rwl-lt315-70-r17-121-118q) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-12*