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Cooper Discoverer AT3 LT
  • Cooper Discoverer AT3 LT
  • Cooper Discoverer AT3 LT
Tire Rack Test

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The Discoverer A/T3LT is Cooper's On-Road All-Terrain tire designed for the drivers of pickup trucks, work vehicles and full-size SUVs who need a tire that provides the rugged durability required to keep up with their active lifestyles. Engineered to tackle dirt, gravel, mud and the urban jungle, the Discoverer A/T3LT combines off-road prowess with agreeable on-road comfort and year-round traction, including light snow traction that meets the tire industry's severe snow service rating requirements and earns the three-peak mountain snowflake (3PMSF) symbol.

Durable-Tread Technology combines a shred-resistant silica compound with the Discoverer A/T3LT 's next-generation all-terrain tread pattern. Cooper's Even Wear Arc Technology optimizes the shape of the footprint for balanced pressure at the contact patch, improving handling and promoting even treadwear. The tread pattern is designed to aid dry traction, while Whisper Grooves between the outboard tread blocks help reduce noise throughout the tire's life. Stone ejector ledges help prevent punctures due to stone drilling, and the alternating scoop and cleat lugs in the shoulder are designed to provide grip on rock, in thick mud or loose soil. Deep, circumferential channels and wide, lateral notches improve hydroplaning resistance, while multiple zigzag sipes in the independent tread blocks create the biting edges needed for traction in slippery conditions. Snow Groove Technology uses saw-tooth block edges to trap snow in the tread for effective snow-to-snow traction.

The internal construction of the Discoverer A/T3LT consists of a robust, two-ply polyester casing. A single-ply, nylon reinforcement above two high-strength steel belts further increases durability and handling response, along with providing high-speed stability.

Note: While non-winter tires featuring the three-peak mountain snowflake (3PMSF) symbol may provide additional longitudinal snow traction beyond what all-season (M+S) tires not bearing the symbol can deliver, they do not match the capability of a true winter tire in all adverse weather conditions.

Related Information: What is the three-peak mountain snowflake symbol (3PMSF)?

Tire Rack Test Results Cooper Discoverer AT3 LT

Testing On-Road All-Terrain Tires 2021: Cooper Discoverer AT3 LT (2:11)

The Discoverer AT3 LT is a popular option in On-Road All-Terrain tires, so we tested it against some of the best in the category to see how the performance stacks up.

Read the Full Test Report

Ratings Charts & Reviews Cooper Discoverer AT3 LT

Tire Category: On-Road All-Terrain

Consumer Surveys

 
Best in Category
Miles Reported
Recommended
Treadwear
Cooper Discoverer AT3 LT
Good
93%
2.3M
8.2 - Good
8.2 - Good
8.7 Dirt Traction
8.1 Sand Traction
7.8 Mud Traction
8.3 Rock Traction
8.7 - Excellent
8.7 Hydroplaning Resistance
8.8 Wet Traction
8.9 - Excellent
8.7 Corner Stability
9.2 Dry Traction
8.8 Steering Response
7.6 - Good
8.1 Light Snow Traction
7.8 Deep Snow Traction
6.8 Ice Traction
8.4 - Good
8.4 Ride Quality
8.3 Noise
8.4 - Good

Consumer Reviews

Media Gallery

Testing On-Road All-Terrain Tires 2021: Cooper Discoverer AT3 LT (2:11)

The Discoverer AT3 LT is a popular option in On-Road All-Terrain tires, so we tested it against some of the best in the category to see how the performance stacks up.

Read the Full Test Report

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