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Toyo Open Country A/T III vs Cooper Discoverer AT3 LT tires

Last updated 6/24/2024 - Originally published 6/24/2024
Written by SimpleTire

There are times when you may find yourself searching for aggressive all-terrain tires to maximize the AWD on pickup trucks, SUVs, and crossovers. In such a case, the Toyo Open Country A/T III is a great choice that offers great tires for enthusiasts with the right amount of quality, performance, innovation, and high-grade customer service. However, if you do not favor particularly aggressive all-terrain tires but the ones that can get the job done, the Cooper Discoverer AT3 LT is a good purchase. The Cooper tires are known for their high durability and great grip on trails and wet roads. More information about the two tires are discussed below in the Open Country vs Discoverer tires comparison.

Toyo Open Country A/T III tires

An aggressive tread pattern is essential for tackling rough terrain, and the Toyo Open Country A/T III showcases the same that has been devised using an advanced tread design. The special rubber compound used in the construction of this tire provides outstanding durability, along with superb wet performance. Toyo has given the Three Peak Mountain Snowflake certification here to give drivers confidence in severe winters, showing that an all-terrain tire's ability to perform in harsh conditions is an essential component of traction. You can expect reliable on- and off-road traction from this tire, and also experience solid braking performance. Thanks to its advanced features, we found the tire suitable for an astounding average SimpleScore of 9.3.

Cooper Discoverer AT3 LT tires

The all-terrain tire, Cooper Discoverer AT3 LT can handle heavy loads as it features a 10-ply rating and gets stone ejectors in the grooves to remove rocks and other debris for better traction. The tire maintains consistent contact for great handling and a tread life that is further boosted by a healthy limited manufacturer warranty. Buyers can purchase the Discoverer AT3 LT for medium to heavy-duty pickup trucks. This tire can stop quicker than regular all-terrain tires on wet roads. We found the Discoverer AT3 LT to be suitable for an average SimpleScore of 8.4.

Toyo Open Country A/T III vs Cooper Discoverer AT3 LT tires on traction

Traction is one of the key areas when it comes to buying a set of all-season tires, and the Toyo Open III tires feature grooves with stone ejectors that can get rid of unwanted rocks and other materials for consistent traction performance. There are also 3D wave sipes for better traction in snow and rain. Both tires provide a high level of confidence in heavy snow as they are Three Peak Mountain Snowflake certified. With the above capabilities, the Toyo Open Country A/T III secures an outstanding average SimpleScore of 9.8.

The Cooper Discoverer AT3 LT features stone ejector ledges in its grooves that force gravel and stones to generate high off and on-road traction. The high tread depth also plays a role in enhancing grip and the tire was found suitable for an average traction SimpleScore of 8.5.

ADVANTAGE: Toyo Open Country A/T III

Toyo Open Country A/T III vs Cooper Discoverer AT3 LT tires on handling

The Toyo tires generate superior braking power for ensuring high levels of safety on icy, snowy, and wet surfaces. As a symmetrical tire, the Open Country A/T III has been designed to offer an excellent handling SimpleScore of 9.3.

Compared to the above, the Cooper Discoverer AT3 LT sports high tread depth and Even Wear Arc Technology that leads to impressive handling performance. Based on the above, these SUV tires are suitable for an average handling SimpleScore of 8.6.

ADVANTAGE: Toyo Open Country A/T III

Toyo Open Country A/T III vs Cooper Discoverer AT3 LT tires on longevity

The Toyo Open Country A/T III comes with a special rubber compound that generates a high amount of chip and cut resistance to increase durability. This tire comes with a limited manufacturer warranty of up to 65,000 miles, which makes it good enough for an average longevity SimpleScore of 8.9.

Compared to the Toyo tire, the Cooper Discoverer AT3 LT is tremendously capable of hauling heavy loads, available with a ply rating of 10. It comes with a limited manufacturer warranty of 60,000 miles and its Durable-Tread Technology prevents rocks and stones from cutting and chipping the tread. Based on the available features, this tire receives an average longevity SimpleScore of 8.5.

ADVANTAGE: Toyo Open Country A/T III

When to use each

Both, the Open Country A/T III and the Cooper Discoverer AT3 LT tires belong to the all-terrain category, which means they are designed and constructed for use on paved roads and hit the occasional off-road adventures. Both of them are Three Peak Mountain Snowflake certified, which means they can be used in moderate to severe winter weather conditions. Even on dry and wet roads, these tires perform well.

Which one should you choose?

A look at the scores will make it seem that the Toyo Open Country A/T III is the clear winner. Though it seems like the better alternative, it doesn’t mean that the Cooper Discoverer AT3 LT does not offer worthy competition. Consider purchasing the Toyo Open Country A/T III if:

  • You want a better grip
  • You want a higher warranty
  • You want better braking performance

In comparison to the above, you should choose the Cooper Discoverer AT3 LT if:

  • You want the quieter tire
  • You want a tire with better hauling capacity
  • You want the tire with more even wear on a daily basis

Still not sure which tire to buy? Fortunately, SimpleTire is here to help as our helpful agents are more than happy to assist you in selecting the right tire for your ride and budget.

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