---
product_id: 22968213
title: "Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire"
brand: "cooper"
price: "$2568"
currency: NZD
in_stock: true
reviews_count: 8
category: "Cooper"
url: https://www.desertcart.nz/products/22968213-cooper-discoverer-stt-pro-all-season-lt305-60r18-121-118q
store_origin: NZ
region: New Zealand
---

# 32.7-inch diameter for commanding presence All-season tread for year-round traction Armor Tek3 sidewall tech for max durability Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire

**Brand:** cooper
**Price:** $2568
**Availability:** ✅ In Stock

## Summary

> 🛞 Rule Every Road & Trail with Confidence

## Quick Answers

- **What is this?** Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire by cooper
- **How much does it cost?** $2568 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/22968213-cooper-discoverer-stt-pro-all-season-lt305-60r18-121-118q)

## 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

- • **Armor Tek3 Durability:** Reinforced sidewalls resist damage from rocks and rough trails
- • **Bold, Commanding Look:** Aggressive tread design that turns heads and signals serious capability
- • **All-Season Versatility:** Engineered to deliver reliable traction rain or shine, on-road or off
- • **Stone Armor Protection:** Innovative tread channels expel stones to prevent damage and maintain grip
- • **Unmatched Off-Road Dominance:** Conquer rugged terrain with aggressive Climber Cleats and Mud Slingers 2.0

## Overview

The Cooper Discoverer STT Pro LT305/60R18 is a premium all-season off-road tire featuring Armor Tek3 reinforced sidewalls, deep tread with mud scoops and climber cleats for superior traction, and Stone Armor technology to resist damage from sharp debris. Designed for extreme off-road performance without compromising on-road handling, it supports a load capacity of 3195 lbs and maintains durability across diverse terrains and weather conditions.

## Description

The Cooper Discoverer STT Pro All-Season LT305/60R18 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.

Review: Cooper sst tires are legit. - I always used to use Dick Cepek tires until I bought my first set of coopers 2 years back. Now I always use Coopers on all 3 of my trucks. The SST,s are not noisy and handle perfectly on my f250 super duty , I love them for all my driving needs. They look aggressively awesome 10/10
Review: Great tires - These are really great tires, great traction, they wear great, they will make your vehicle stand out from the rest. They are a bit pricey. You get what you pay for though. They are a bit noisy on the highway, but the benefits out way a little noise. I recommend these tires 100%.

## 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 | B017XTUW0S |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #613,479 in Automotive ( See Top 100 in Automotive ) #1,053 in Light Truck & SUV All-Terrain & Mud-Terrain Tires |
| Brand | Cooper |
| Construction Type | Radial |
| Customer Reviews | 4.5 4.5 out of 5 stars (151) |
| Date First Available | November 13, 2015 |
| Global Trade Identification Number | 00029142829690, 00291428296902, 00652217032369 |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 32.7 Inches |
| Item Weight | 54 pounds |
| Item model number | 170123034 |
| Load Capacity | 3195 Pounds |
| Load Range | E |
| Manufacturer | Cooper |
| Manufacturer Part Number | 170123034 |
| Maximum Pressure | 65 Pound per Square Inch |
| Model | DISCOVERER STT PRO |
| OEM Part Number | 170123034 |
| Section Width | 305 Millimeters |
| Size | LT305/60R18 121/118Q |
| Tire Diameter | 32.68 inches |
| Tread Depth | 21 32nds |
| Tread Type | Non-Directional |
| UPC | 029142829690 291428296902 652217032369 |
| UTQG | E 10P |
| Unit Count | 1.0 Count |
| Vehicle Tire ISO Metric Size Description | 305/60R18 |

## Product Details

- **Brand:** Cooper
- **Load Capacity:** 3195 Pounds
- **Load Index:** 121.0
- **Rim Size:** 18 Inches
- **Section Width:** 305 Millimeters
- **Size:** LT305/60R18 121/118Q
- **Speed Rating:** Q
- **Tire Aspect Ratio:** 60.0
- **Tread Depth:** 21 32nds
- **Tread Type:** Non-Directional

## Images

![Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire - Image 1](https://m.media-amazon.com/images/I/81JGm+U5UUL.jpg)
![Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire - Image 2](https://m.media-amazon.com/images/I/81PIbBCFJeL.jpg)
![Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire - Image 3](https://m.media-amazon.com/images/I/81aQX-ppp2L.jpg)
![Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire - Image 4](https://m.media-amazon.com/images/I/81wPJoHoKWL.jpg)
![Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire - Image 5](https://m.media-amazon.com/images/I/81xam6Rzz6L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cooper sst tires are legit.
*by R***G on May 2, 2025*

I always used to use Dick Cepek tires until I bought my first set of coopers 2 years back. Now I always use Coopers on all 3 of my trucks. The SST,s are not noisy and handle perfectly on my f250 super duty , I love them for all my driving needs. They look aggressively awesome 10/10

### ⭐⭐⭐⭐⭐ Great tires
*by B***N on July 17, 2023*

These are really great tires, great traction, they wear great, they will make your vehicle stand out from the rest. They are a bit pricey. You get what you pay for though. They are a bit noisy on the highway, but the benefits out way a little noise. I recommend these tires 100%.

### ⭐⭐⭐⭐⭐ Awesome performing truck tire!
*by A***. on September 18, 2016*

Great tires in rain, mud and sand here in florida. Much quieter on pavement than i thought they would be. Very aggressive tread, i hope they wear slowly.. Update, 4.29.2018 Have been daily driving on these for 1.5 years! They wear slow, balance and rotate great still. Noise is very low at any speed. Still look amazing and my Tundra has never been stuck....ever WILL replace with exact same tire if they ever wear down enough to replace. Have well over 70% tread left

## Frequently Bought Together

- Cooper Discoverer STT Pro All-Season LT305/60R18 121/118Q Tire
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**Shop now:** [https://www.desertcart.nz/products/22968213-cooper-discoverer-stt-pro-all-season-lt305-60r18-121-118q](https://www.desertcart.nz/products/22968213-cooper-discoverer-stt-pro-all-season-lt305-60r18-121-118q)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-18*