---
product_id: 20961472
title: "Cooper Discoverer STT Pro All-Season LT315/70R17 121/118Q Tire"
brand: "cooper"
price: "¥319051"
currency: JPY
in_stock: true
category: "Cooper"
url: https://www.desertcart.jp/products/20961472-cooper-discoverer-stt-pro-all-season-lt315-70r17-121-118q
store_origin: JP
region: Japan
---

# 10-ply radial durability Armor Tek3 sidewall protection All-season off-road traction Cooper Discoverer STT Pro All-Season LT315/70R17 121/118Q Tire

**Brand:** cooper
**Price:** ¥319051
**Availability:** ✅ In Stock

## Summary

> 🛻 Ready to Rule Every Terrain — Don’t Just Drive, Dominate!

## Quick Answers

- **What is this?** Cooper Discoverer STT Pro All-Season LT315/70R17 121/118Q Tire by cooper
- **How much does it cost?** ¥319051 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/20961472-cooper-discoverer-stt-pro-all-season-lt315-70r17-121-118q)

## 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

- • **All-Season Versatility:** Year-round performance that balances extreme off-road capability with smooth on-road handling.
- • **Rock Climber Sidewall Grip:** Deep cleats and flex grooves that master jagged rocks and rough terrain.
- • **Mud Slingers 2.0 Technology:** Self-cleaning deep trenches that power through thick mud without losing grip.
- • **Armor Tek3 Sidewall Strength:** Engineered to resist cuts, bruises, and boulder impacts for unstoppable durability.
- • **Unmatched Off-Road Dominance:** Conquer the wild with best-in-class traction and rugged tread design.

## Overview

The Cooper Discoverer STT Pro LT315/70R17 is a 10-ply, all-season off-road tire designed for extreme durability and superior traction. Featuring patented Armor Tek3 sidewall technology, advanced tread patterns like Mud Slingers 2.0 and Rock Climber Sidewalls, it delivers exceptional grip on mud, rocks, and loose terrain while maintaining reliable on-road performance. Rated for heavy loads and built to withstand harsh conditions, this tire is the ultimate choice for serious off-road enthusiasts who demand toughness and versatility year-round.

## Description

The Cooper Discoverer STT Pro All-Season LT315/70R17 121Q 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 | B017XTV8C4 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #39,054 in Automotive ( See Top 100 in Automotive ) #30 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 (1,131) |
| Global Trade Identification Number | 00029142829645, 00291428296452 |
| Included Components | Tire Only |
| Item Diameter | 34.57 inches |
| Item Dimensions | 34.57 x 34.57 x 12.6 inches |
| Item Highlight | Light Truck Mud Terrain All Season Traction 121/118Q Rated E 10 Ply Radial Construction Raised White Letters Tire |
| Item Type Name | Tire |
| Item Weight | 69.8 pounds |
| Load Capacity | 3195 pounds |
| Load Index | 121 |
| Load Range | E |
| Manufacturer | Cooper |
| Manufacturer Part Number | 170119034 |
| Manufacturer Warranty Description | Standard Limited Warranty |
| Maximum Pressure | 65 psi |
| Model Number | 170119034 |
| OEM Equivalent Part Number | COOP-90000023657 |
| Ply | 10-Ply |
| Rim Size | 17 inches |
| Seasons | Year Round |
| Section Width | 31.5 centimeters |
| Size | LT315/70R17 121/118Q |
| Spare Tire Mounting Location | Front or Rear |
| Speed Rating | Q |
| Tire Aspect Ratio | 70 |
| Tire Diameter | 34.57 |
| Tread Depth | 21 thirty_seconds_inches |
| Tread Type | Non-Directional |
| UPC | 029142829645 291428296452 |
| Unit Count | 1 Count |
| Vehicle Tire ISO Metric Size Description | 315/70R17 |

## Product Details

- **Brand:** Cooper
- **Load Capacity:** 3195 pounds
- **Load Index:** 121
- **Rim Size:** 17 inches
- **Section Width:** 31.5 centimeters
- **Size:** LT315/70R17 121/118Q
- **Speed Rating:** Q
- **Tire Aspect Ratio:** 70
- **Tread Depth:** 21 thirty_seconds_inches
- **Tread Type:** Non-Directional

## Images

![Cooper Discoverer STT Pro All-Season LT315/70R17 121/118Q 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 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

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**Shop now:** [https://www.desertcart.jp/products/20961472-cooper-discoverer-stt-pro-all-season-lt315-70r17-121-118q](https://www.desertcart.jp/products/20961472-cooper-discoverer-stt-pro-all-season-lt315-70r17-121-118q)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-06*