Cooper Discoverer AT3 vs Toyo Open Country AT III

With the fact that you are here, you decided to choose the best between these two Cooper Discoverer AT3 vs Toyo Open Country A/T III.

However, before you go with any choice few things you had to realize about these tires are compulsory which will help you with making a choice.

Indeed, the selection of tires depends on certain factors.

Your driving habits or needs are one of the main components.

You may either drive on a smooth street surface or drive your vehicle off on a rough and unpaved surface. These tires are designed specifically.

In the tires world, named on-road and off-road tires.

As you can see there is already “AT” present in both, abbreviated as All-Terrain tires.

All-Terrain tires are the type of tires that are designed to provide versatile performance on a wide range of road surfaces, including both on and off-road conditions.

These tires are intended to strike a balance between the capabilities of highway or all-season tires and more aggressive off-road mud-terrain tires.

When it comes to all-terrain tires, the market offers plenty of options to cater to diverse driving needs.

The Cooper Discoverer AT3 vs  Toyo Open Country A/T III are the two popular contenders in this category.

Both tires boast versatile performance on and off the road, making them attractive choices for drivers seeking a balance between all-terrain capabilities and on-road comfort.

Let’s dig into a detailed comparison of these two top all-terrain tires to help you make an informed decision for your vehicle.

Durability Aspects

Both the Cooper Discoverer AT3 and the Toyo Open Country A/T III are reputable all-terrain tires known for their durability and robust construction.

However, specific details and performance can vary depending on tire size and individual driving habits.

Let’s compare the durability aspects of these two tires based on their design features and general reputation:

Cooper discoverer AT3

Cooper Discoverer AT3

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The Cooper Discoverer AT3’s tough construction and specially formulated tread compound provide exceptional durability.

making it a reliable choice for rugged off-road adventures and extended highway drives.


The Cooper Discoverer AT3 is built with strong and durable construction, including reinforced sidewalls.

This construction is designed to resist cuts, chips, and other damages, making it suitable for rugged off-road conditions.

Tread Compound

The tire’s tread compound is formulated for improved tread life, contributing to its whole durability.

The AT3 is designed to withstand the wear and tear of frequent off-road driving and remain reliable on highways


Many users report that the Cooper Discoverer AT3 offers good tread life, with some drivers experiencing high mileage before needing replacements.

The tire’s ability to maintain performance and grip over an extended period adds to its durability.

Toyo Open Country A/T III

Toyo Open Country AT III

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The Toyo Open Country A/T III features robust construction with reinforced sidewalls for durability during off-road adventures.

Its improved tread compound ensures better tread life and performance on different terrains.

While user feedback varies, the A/T III is designed for longevity. Now, let’s explore its exceptional traction on wet and dry surfaces.


The Toyo Open Country A/T III also features robust construction with reinforced sidewalls.

This design aims to provide excellent resistance to cut punctures during off-road adventures, enhancing its overall durability.

Tread Compound

Toyo has focused on improving the A/T III’s compound to ensure better tread life and durability compared to its predecessor, the A/T II.

The tire’s enhanced compound contributes to its longevity and performance on different terrains.


While direct user feedback on the A/T III’s longevity may vary depending on driving conditions and tire size.

The tire’s design improvements indicate a commitment to providing a durable and long-lasting product.


Both the Cooper Discoverer AT3 and the Toyo Open Country A/T III are designed to be durable and capable of withstanding the challenges of all-terrain driving.

Drivers of both tires have reported positive experiences with their longevity and performance on various surfaces.

Ultimately, the choice between these two tires should be based on your specific driving needs, tire size availability, and personal preferences.

Tread Design Aspects

The tread appearance of the Cooper Discoverer AT3 and the Toyo Open Country A/T III is distinct, reflecting their respective design philosophies and intended performance characteristics.

However, it is important to note that tire designs may change over time, and it’s essential to verify the latest tread appearance with the manufacturer or authorized dealers.

Cooper discoverer AT3

  • The Cooper Discoverer AT3 has an aggressive and robust all-terrain tread pattern. It’s tread design features large and deep tread blocks with multiple sipes and lateral grooves.
  • The central part of the tread is characterized by substantial continuous blocks, providing stable contact with the road or off-road surfaces. This design enhances traction on various terrains, with snow, gravel, and mud.
  • The tread also incorporates numerous biting edges and open channels to facilitate water evacuation, enhancing wet traction and reducing the risk of hydroplaning on wet roads.
  • The sidewalls may have raised lettering or additional sidewall armor features, emphasizing the tire’s rugged appearance and off-road capabilities.

Toyo Open Country A/T III

  • The Toyo Open Country A/T III also features an aggressive all-terrain tread pattern but with a slightly different focus compared to the Cooper Discoverer AT3.
  • The tread blocks are designed to be more balanced, with a mix of larger blocks in the central area and smaller blocks towards the shoulder. This design aims to provide a compromise between on-road comfort and off-road performance.
  • The tread pattern includes a combination of sipes and lateral grooves, optimizing grip on various surfaces, such as dirt, sand, and light snow.
  • Like the Cooper Discoverer AT3, the Open Country A/T III also features water-evacuating channels to enhance wet traction and reduce hydroplaning risk.
  • The sidewall design may include raised lettering or distinctive features to give the tire a rugged and stylish appearance.


Both the Cooper Discoverer AT3 and the Toyo Open Country A/T III offer aggressive all-terrain tread patterns suitable for various off-road and on-road conditions.

The Cooper Discoverer AT3’s tread design appears to lean more towards maximum off-road traction, while the Toyo Open Country A/T III emphasizes a balanced performance between on-road comfort and off-road capabilities.

On-Road Performance Aspects

Comparing the on-road performance aspects of the Cooper Discoverer AT3 and the Toyo Open Country A/T III is essential for understanding how each tire behaves on paved roads and highways.

Both tires are classified as all-terrain tires, designed to deliver a balance between off-road capabilities and on-road comfort. However, there are some differences in their design and performance characteristics.

Let’s explore the on-road performance aspects of each tire:

Ride Comfort

Cooper discoverer AT3

The Cooper Discover AT3 is known for providing a relatively smooth and comfortable ride on highways and paved roads.

It incorporates technologies to minimize road noise and vibrations, guaranteeing a pleasurable driving experience during daily commutes and long-distance trips.

Toyo Open Country A/T III

The Toyo Open Country A/T III also aims to deliver a comfortable on-road ride.

Its tread design and construction are optimized for reduced road noise and improved ride comfort, making it suitable for extended highway driving.

Handling & Stability

Cooper discoverer AT3

The Cooper discoverer AT3 offers stable handling on highways, giving drivers confidence and control during maneuvers.

Its tread pattern and construction contribute to responsive steering and good stability, allowing for safe and precise driving.

Toyo Open Country AT III

While the Toyo Open Country A/T III is designed for balanced on-road performance, offering good handling and stability.

Its tread design and engineering provide predictable steering response, increasing the overall driving capability.

Wet Traction

Cooper discoverer AT3

This tire makes very soft rubber, which gives the tread the necessary stretchability.

As a result, the sipes can easily squeeze and expand, effectively removing water.

Overall, the Cooper AT3 XLT is superior compared to Toyo Open Country A/T III:

Toyo Open Country AT III

The A/T III is also designed to provide dependable wet traction.

Its tread design and compound help the tire maintain a grip on wet surfaces, making it a suitable choice for various weather conditions.

Dry Performance

Cooper discoverer AT3

The AT3 performs well on dry roads, providing confident and stable handling.

It is durable construction and robust tread pattern contribute to consistent performance under dry conditions.

But the shoulder ribs of the tire don’t offer as much firmness, and handling become to some extent compromised, as compared to Toyo Open Country A/T III:

Toyo Open Country A/T III

The A/T III is engineered to offer reliable dry performance.

Its tread design and construction provide good grip and stability on dry roads, ensuring a smooth and safe driving experience.


Both tires have their own pros and cons at some level when it comes to on-road performance.

The Cooper Discoverer AT3 and the Toyo Open Country A/T III are designed to offer commendable on-road performance while maintaining their all-terrain capabilities.

They provide a comfortable and stable ride on highways, roads, and responsive handling.

Cooper discoverer AT3 is much more suitable in Wet traction while Toyo open Country A/T III is good to go with dry traction.

Off-Road Performance Aspects

While wandering off-roading, one should consider different testing that can scrutinize a tire’s toughness and execution.

Rocky Terrain

Unfortunately on rocks, where sturdiness is profoundly required, both these tires become extremely feeble, so it’s not suggested that you go on harder territories without reinforcement.

The Cooper discoverer AT3 offers estimable horizontal footing and climbing skills because of its thicker sidewall hauls.

While the Toyo AT3, regardless of its absence of hearty sidewall biters, gives almost identical execution values, because of its F and S molded blocks giving hold from different points.

Mud traction

Both of the tires aren’t appropriate for extremely muddy circumstances, basically because of their vulnerability to accumulating thick, wet garbage in their smaller channels. At the end of the day, their less voided structure can’t get away from the thick dirt in time.

But still, if you have to choose between the two;

The Toyo Open Country A/T III provides respectable mud traction due to its versatile tread design, biting edges, and self-cleaning capability.

It offers a reliable grip on moderate muddy surfaces and performs well in various off-road terrains, making it right for exploratory driving.

Road Noise

As an all-terrain tire, The Toyo Open Country A/T III and The Cooper discoverer AT3 might produce some road noise on paved roads, especially at higher speeds. This is a common characteristic of tires designed for off-road capabilities.

Winter Performance

Although the tire performs well in light snow and moderate winter conditions, it is not a dedicated winter tire.

Its performance in severe winter conditions may be limited compared to specialized winter tires.

Better Worth to Money Aspects

Both the Cooper Discoverer AT3 and the Toyo Open Country A/T III offer excellent worth for money with their versatile all-terrain performance, durability, and overall positive user experiences.

When deciding between the two, consider their respective tread designs, performance characteristics, longevity, and price, and choose the tires that align best with your needs and preferences.

Always consult with tire professionals and check the latest reviews and ratings to ensure you are getting the most up-to-date information and making the best choice for your vehicle.


While the Toyo Open country ATIII and the Cooper discoverer AT3 are named All-terrain tires.

they gradient more towards on-road execution because of their tread design and lightweight development.

They both have some limitations when it comes to off-roading, to some extent they are good to go for off-road also but, they won’t be as good as ones for mud terrain, but most people would find them sufficient.

If you prioritize aggressive off-road traction, durability, and versatility, the Cooper Discoverer AT3 might be the better choice for you.

Apart from this, if you want a tire that offers good off-road abilities while providing a comfortable on-road ride, the Open Country A/T III could be the right option.

But In any case when choosing between the two, consider your driving preferences, the type of terrain you’ll encounter most frequently, and the level of on-road comfort you desire.

As with any tire, it’s essential to consult with tire professionals and consider user reviews to make an informed decision based on the latest information available.

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