---
product_id: 21507084
title: "Discoverer STT Pro All-Season LT275/65R18 123/120Q Tire"
brand: "cooper"
price: "VT318830"
currency: VUV
in_stock: true
reviews_count: 8
category: "Cooper"
url: https://www.desertcart.vu/products/21507084-discoverer-stt-pro-all-season-lt275-65r18-123-120q-tire
store_origin: VU
region: Vanuatu
---

# LT275/65R18 size for versatile fit All-season off-road traction Armor Tek3 sidewall durability Discoverer STT Pro All-Season LT275/65R18 123/120Q Tire

**Brand:** cooper
**Price:** VT318830
**Availability:** ✅ In Stock

## Summary

> 🛞 Rule Every Terrain with Confidence — The Ultimate All-Season Off-Road Tire!

## Quick Answers

- **What is this?** Discoverer STT Pro All-Season LT275/65R18 123/120Q Tire by cooper
- **How much does it cost?** VT318830 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/21507084-discoverer-stt-pro-all-season-lt275-65r18-123-120q-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:** Exceptional traction in rain, mud, snow, and dry conditions without compromising highway performance.
- • **Stone Armor Tread Design:** Innovative channels and ridges prevent stone retention and protect against sharp debris.
- • **Premium Load Capacity & Size:** Supports up to 3,415 lbs with a robust 18-inch diameter, perfect for light trucks and SUVs.
- • **Unmatched Off-Road Dominance:** Conquer mud, rocks, and rough terrain with aggressive tread and Rock Climber Sidewall technology.
- • **Armor Tek3 Reinforced Sidewalls:** Engineered for maximum resistance against punctures and sidewall damage on the toughest trails.

## Overview

The Cooper Discoverer STT Pro LT275/65R18 is a top-tier all-season off-road tire designed for extreme durability and superior traction. Featuring patented Armor Tek3 sidewall technology, aggressive tread patterns including Rock Climber Sidewall and Mud Slingers 2.0, it delivers unmatched performance on mud, rocks, and rough terrain while maintaining reliable on-road handling. With a 3,415 lb load capacity and 19/32 tread depth, it’s engineered for light trucks and SUVs seeking rugged versatility and long-lasting toughness.

## Description

The Cooper Discoverer STT Pro All-Season LT275/65R18 123Q 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 | B017XTTSIK |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #590,946 in Automotive ( See Top 100 in Automotive ) #1,068 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 | 00029142829676, 00291428296766 |
| Item Diameter | 18 Inches |
| Item Weight | 57.2 pounds |
| Item model number | 170121034 |
| Load Capacity | 3415 Pounds |
| Manufacturer | Cooper |
| Manufacturer Part Number | 170121034 |
| Maximum Pressure | 80 Pound per Square Inch |
| Model | DISCOVERER STT PRO |
| Rim Width | 8 Inches |
| Section Width | 275 Millimeters |
| Size | LT275/65R18 123/120Q |
| Tire Diameter | 32.28 |
| Tread Depth | 19 32nds |
| Tread Type | Non-Directional |
| UPC | 291428296766 826825966662 029142829676 826825966679 |
| Unit Count | 1.0 Count |
| Vehicle Tire ISO Metric Size Description | 275/65R18 |

## Product Details

- **Brand:** Cooper
- **Load Capacity:** 3415 Pounds
- **Load Index:** 123.0
- **Rim Size:** 18 Inches
- **Section Width:** 275 Millimeters
- **Size:** LT275/65R18 123/120Q
- **Speed Rating:** Q
- **Tire Aspect Ratio:** 65.0
- **Tread Depth:** 19 32nds
- **Tread Type:** Non-Directional

## Images

![Discoverer STT Pro All-Season LT275/65R18 123/120Q Tire - Image 1](https://m.media-amazon.com/images/I/81aQX-ppp2L.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,

## 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 LT275/65R18 123/120Q Tire
- 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
- Circuit Performance Chrome Rubber Valve Stems TR413 30mm (Set of 4)

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**Shop now:** [https://www.desertcart.vu/products/21507084-discoverer-stt-pro-all-season-lt275-65r18-123-120q-tire](https://www.desertcart.vu/products/21507084-discoverer-stt-pro-all-season-lt275-65r18-123-120q-tire)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-04*