---
product_id: 22968212
title: "Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire"
brand: "cooper"
price: "$2439.75"
currency: USD
in_stock: true
category: "Cooper"
url: https://www.desertcart.us/products/22968212-cooper-discoverer-stt-pro-all-season-35x13-50r20lt-121q-tire
store_origin: US
region: United States of America
---

# 35-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 35X13.50R20LT 121Q Tire

**Brand:** cooper
**Price:** $2439.75
**Availability:** ✅ In Stock

## Summary

> 🛞 Rule Every Terrain, Every Season — No Compromises.

## Quick Answers

- **What is this?** Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire by cooper
- **How much does it cost?** $2439.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/22968212-cooper-discoverer-stt-pro-all-season-35x13-50r20lt-121q-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

- • **Aggressive Tread Depth:** 21/32nds deep tread aggressively clears debris for continuous grip
- • **All-Season Versatility:** Engineered to deliver reliable traction rain or shine, on-road or off
- • **Armor Tek3 Construction:** Reinforced sidewalls resist punctures and abrasions on the toughest terrain
- • **Heavy-Duty Load Capacity:** Supports up to 3,195 lbs with a robust 10-ply radial build
- • **Unmatched Off-Road Dominance:** Conquer rocks, mud, and sand with specialized tread tech like Rock Climber Sidewalls and Mud Slingers 2.0

## Overview

The Cooper Discoverer STT Pro 35X13.50R20LT 121Q is a premium all-season off-road tire featuring Armor Tek3 reinforced sidewalls, aggressive 21/32nds tread depth, and specialized tread patterns like Rock Climber Sidewalls and Mud Slingers 2.0. Designed for extreme off-road performance without sacrificing on-road traction, it supports heavy loads up to 3,195 lbs and fits 20-inch rims, making it the ultimate choice for adventurous professionals who demand durability and versatility year-round.

## Description

The Cooper Discoverer STT Pro All-Season 35X13.50R20LT 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 | B017XTXKZC |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #142,174 in Automotive ( See Top 100 in Automotive ) #151 in Light Truck & SUV All-Terrain & Mud-Terrain Tires |
| Brand Name | Cooper |
| Construction Type | Radial |
| Customer Reviews | 4.5 4.5 out of 5 stars (250) |
| Global Trade Identification Number | 00029142829881, 00291428298814 |
| Included Components | Tire Only |
| Item Diameter | 34.57 Inches |
| Item Dimensions | 34.57 x 34.57 x 13.2 inches |
| Item Type Name | Tire |
| Item Weight | 79.3 Pounds |
| Load Capacity | 3195 Pounds |
| Load Index | 122.0 |
| Load Range | E |
| Manufacturer | Cooper |
| Manufacturer Part Number | 170141006 |
| Manufacturer Warranty Description | Standard Limited Warranty |
| Maximum Pressure | 65 Pound per Square Inch |
| Model Number | 170141006 |
| OEM Equivalent Part Number | COOP-90000023697 |
| Ply | 10-Ply |
| Rim Size | 20 Inches |
| Seasons | Year Round |
| Section Width | 13.5 Inches |
| Size | 35X13.50R20LT 121Q |
| Spare Tire Mounting Location | Front or Rear |
| Speed Rating | Q |
| Tire Aspect Ratio | 13.5 |
| Tire Diameter | 35 Inches |
| Tread Depth | 21 32nds |
| Tread Type | Non-Directional |
| UPC | 029142829881 826825967256 291428298814 |
| Unit Count | 1.0 Count |
| Vehicle Tire ISO Metric Size Description | 35/13.50R20LT |

## Product Details

- **Brand:** Cooper
- **Load Capacity:** 3195 Pounds
- **Load Index:** 122.0
- **Rim Size:** 20 Inches
- **Section Width:** 13.5 Inches
- **Size:** 35X13.50R20LT 121Q
- **Speed Rating:** Q
- **Tire Aspect Ratio:** 13.5
- **Tread Depth:** 21 32nds
- **Tread Type:** Non-Directional

## Images

![Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire - Image 1](https://m.media-amazon.com/images/I/81yAZbtaAIL.jpg)
![Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire - Image 2](https://m.media-amazon.com/images/I/81I28TchhBL.jpg)
![Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire - Image 3](https://m.media-amazon.com/images/I/81xvHD9ODOL.jpg)
![Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire - Image 4](https://m.media-amazon.com/images/I/91YhnE1-VBL.jpg)
![Cooper Discoverer STT Pro All-Season 35X13.50R20LT 121Q Tire - Image 5](https://m.media-amazon.com/images/I/51giAMFQoeL.jpg)

## Available Options

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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-18*