---
product_id: 553284273
title: "Discoverer STT Pro All-Season 35X12.50R20LT 121Q Tire"
brand: "cooper"
price: "€ 2190.50"
currency: EUR
in_stock: true
reviews_count: 5
category: "Cooper"
url: https://www.desertcart.sk/products/553284273-discoverer-stt-pro-all-season-35x12-50r20lt-121q-tire
store_origin: SK
region: Slovakia
---

# 35-inch diameter for commanding presence All-season tread for year-round traction Armor Tek3 sidewall tech for ultimate durability Discoverer STT Pro All-Season 35X12.50R20LT 121Q Tire

**Brand:** cooper
**Price:** € 2190.50
**Availability:** ✅ In Stock

## Summary

> 🛞 Rule Every Road & Trail with Confidence

## Quick Answers

- **What is this?** Discoverer STT Pro All-Season 35X12.50R20LT 121Q Tire by cooper
- **How much does it cost?** € 2190.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/553284273-discoverer-stt-pro-all-season-35x12-50r20lt-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

- • **Built for Heavy Loads:** Supports up to 1449 kg with a robust 121 load index—ready for your toughest hauls.
- • **All-Season Versatility:** Engineered to deliver superior traction and control in mud, sand, snow, and wet roads alike.
- • **Stone Armor Technology:** Innovative tread channels expel stones and debris, keeping your ride smooth and damage-free.
- • **Unmatched Off-Road Dominance:** Conquer rugged terrain with deep Climber Cleats and Mud Slingers 2.0 for relentless grip.
- • **Armor Tek3 Sidewall Protection:** Reinforced 10-ply construction resists punctures and sidewall damage on the toughest trails.

## Overview

The Cooper Discoverer STT Pro 35X12.50R20LT 121Q is a premium all-season off-road tire featuring advanced Armor Tek3 sidewall technology and aggressive tread design. With a massive 35-inch diameter, 10-ply durability, and specialized mud and stone-clearing features, it delivers exceptional traction and toughness for extreme off-road adventures without compromising on-road performance.

## Description

The Cooper Discoverer STT Pro All-Season 35X12.50R20LT 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.

Review: Great Tires
Review: Gomme e venditore “su ruote “ok. - gomme di qualità e venditore preciso.

## 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 | B017XTWD0U |
| Brand | Cooper |
| Brand Name | Cooper |
| Customer Reviews | 4.6 out of 5 stars 682 Reviews |
| Global Trade Identification Number | 00029142829751, 00781787879538 |
| Included Components | Tire Only |
| Item Diameter | 34.7 Inches |
| Item Dimensions | 88.1 x 88.1 x 31.5 centimeters |
| Item Type Name | Tire |
| Item Weight | 31.24 kg |
| Load Capacity | 1449.23 kg |
| Load Index | 121.0 |
| Load index | 121.0 |
| Manufacturer | Cooper |
| Ply | 10-Ply |
| Rim Size | 20 Inches |
| Rim Width | 10 Inches |
| Rim size | 20 Inches |
| Seasons | Year Round |
| Section Width | 12.5 Inches |
| Section width | 12.5 Inches |
| Size | 35X12.50R20LT 121Q |
| Speed Rating | O |
| Tire Aspect Ratio | 12.5 |
| Tire Diameter | 35 |
| Tread Depth | 21 32nds |
| Tread Type | Non-Directional |
| Tyre aspect ratio | 12.5 |
| UPC | 029142829751 781787879538 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Cooper
- **Rim size:** 20 Inches
- **Section width:** 12.5 Inches
- **Size:** 35X12.50R20LT 121Q
- **Tyre aspect ratio:** 12.5

## Images

![Discoverer STT Pro All-Season 35X12.50R20LT 121Q 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

### ⭐⭐⭐⭐⭐ Great Tires
*by T***A on 18 December 2025*



### ⭐⭐⭐⭐⭐ Gomme e venditore “su ruote “ok.
*by L***I on 16 April 2019*

gomme di qualità e venditore preciso.

### ⭐⭐⭐⭐⭐ Great tyres, conveniently & quickly delivered!
*by B***R on 3 August 2018*



## Frequently Bought Together

- Cooper Discoverer STT Pro All-Season 35X12.50R20LT 121Q Tire
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- Roundrule Xtra All Steel Heavy Duty Premium Trailer Radial Tire-ST235/80R16 235/80/16 235/80-16 129/125M Load Range G LRG 14-Ply BSW Black Side Wall

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**Shop now:** [https://www.desertcart.sk/products/553284273-discoverer-stt-pro-all-season-35x12-50r20lt-121q-tire](https://www.desertcart.sk/products/553284273-discoverer-stt-pro-all-season-35x12-50r20lt-121q-tire)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-17*