Tire Scouter
Cooper Discoverer AT3 4S

Cooper Discoverer AT3 4S

  • All-terrain
  • 7 sizes
  • Severe-snow rated

Best for adventurous drivers. Ideal for those who frequently switch between on-road and light off-road conditions.

68Good

65k mi

620

Score and specs shown for size 225/75R16. Other sizes are listed below and can differ.

Our take

The Cooper Discoverer AT3 4S is a solid choice for drivers who need a versatile all-terrain tire with a focus on longevity and off-road capability. Its 65,000-mile treadwear warranty and 8.5 treadlife score are strong points, especially compared to the category average of 55,717 miles. The 3PMSF rating adds confidence in light snow, making it a reliable option for year-round use.

In the all-terrain category, off-road traction and treadlife are key, and the AT3 4S delivers on both fronts. Its wet grip score of 6 outperforms the category average, which is beneficial for wet conditions. However, the dry grip is slightly below average, which might be a factor for those who drive extensively on dry roads.

When compared to competitors like the Toyo Open Country A/T III and Yokohama Geolandar A/T G015, the Discoverer AT3 4S stands out for its treadlife warranty. However, those seeking better on-road handling might prefer the Pirelli Scorpion Zero All Season. The noise level is typical for the category, so long highway trips might be less comfortable.

Drivers who prioritize highway comfort and reduced noise should explore the Pirelli Scorpion Zero All Season, which offers better on-road handling performance. The AT3 4S is best for those who value durability and off-road versatility over on-road refinement.

Pros

  • Off-road traction benefits from the 3PMSF rating, making it suitable for light snow and varied terrains.
  • Treadlife score of 8.5 and a 65,000-mile warranty exceed the category average of 55,717 miles, promising longevity.
  • Wet grip score of 6 is above the category average of 5.2, providing decent performance in rainy conditions.

Cons

  • If highway comfort and noise are top priorities, consider alternatives with better on-road manners.
  • Noise level is average for the category, which might be noticeable on long highway drives.
  • Dry grip rating of 6.5 is slightly below the category average of 6.6, which might affect performance on dry pavement.
  • The Pirelli Scorpion Zero All Season offers better on-road handling, which could be a consideration for those prioritizing highway performance.

Tirescouter Editorial analysis, written from manufacturer specs with AI assistance. It is not based on road tests or owner reviews. How we score

Spec facts

65,000 mi
620
A
B
T · 118 mph
104
Not listed
Yes

Available sizes

Every size the Discoverer AT3 4S comes in. Pick a size to compare other tires made in it.

Every size this tire comes in, with its load, speed and UTQG ratings
SizeShop this sizeLoad indexSpeed ratingUTQGWarrantyMax loadMax PSI
225/75R16Tire Rack104T · 118 mph620 A B65k miNot listedNot listed
235/75R16Tire Rack108T · 118 mph620 A B65k mi2,205 lb44
235/75R17Tire Rack109T · 118 mph620 A B65k miNot listedNot listed
245/70R17Tire Rack110T · 118 mph620 A B65k miNot listedNot listed
255/50R20Tire Rack109H · 130 mph620 A B65k mi2,271 lb50
265/70R15Tire Rack112T · 118 mph620 A B65k miNot listedNot listed
265/75R15Tire Rack112T · 118 mph620 A B65k miNot listedNot listed

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