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.
El Discoverer A/T3LT de Cooper pertenece a la categoría: Dentro/Fuera De Carretera Todoterreno y fue diseñado para conductores de picops, vehículos de trabajo y vehículos utilitarios deportivos (SUV, por sus siglas en inglés) grandes, que necesitan un neumático que proporcione la resistencia y durabilidad requerida para mantener sus estilos activos de vida. Fabricado para lidiar con tierra, grava, lodo y la jungla urbana, el Discoverer A/T3LT, combina destreza todoterreno con una comodidad agradable en carreteras y tracción durante todo el año, incluyendo superficies con poca nieve, lo cual le permite cumplir con los requerimientos de la industria en cuanto a nieve severa y le permite poseer el símbolo “tres picos montaña/copo de nieve”, 3PMSF (three-peak mountain snowflake symbol, 3PMSF).
La tecnología "Durable-Tread" combina un compuesto de caucho con sílice resistente a desgarros, con el patrón de la generación más reciente todoterreno del Discoverer A/T3LT. La tecnología "Even Wear Arc" de Cooper optimiza la forma de la huella para obtener una presión balanceada en el área de contacto, mejorando la maniobrabilidad y proporcionando un desgaste parejo. El patrón de la huella ha sido diseñado para mejorar la tracción sobre superficies mojadas, mientras que ranuras "Whisper Grooves" entre los bloques externos ayudan a reducir el ruido a través del ciclo de vida del neumático. Soportes para expulsar piedras ayudan a prevenir perforaciones y hendiduras alternadas en la parte exterior de los hombros, proporcionan tracción en rocas, lodo espeso y superficies sueltas. Canales circunferenciales anchos y ranuras laterales profundas mejoran la resistencia al deslizamiento sobre agua (hydroplaning), mientras que múltiples ranuras pequeñas tipo zigzag en los bloques de la huella, crean la cantidad de bordes adherentes para proporcionar tracción sobre superficies resbalosas. La tecnología "Snow Groove" utiliza bordes con dientes serrados para atrapar nieve en la huella para mejorar la tracción nieve con nieve.
La construcción interna del Discoverer A/T3LT cuenta con una estructura robusta de dos capas de poliéster. Una capa de refuerzo de nailon por encima de dos correas de acero de gran fortaleza, aumenta aún más la durabilidad y la respuesta al girar el volante, además de proporcionar estabilidad a velocidades elevadas.
Nota: Mientras los neumáticos no identificados para su uso en invierno, pero con el símbolo tres picos montaña copo de nieve, 3PMSF (Three-Peak Mountain Snowflake, 3PMSF) podrían proporcionar mayor tracción longitudinal en nieve, que la ofrecida por neumáticos para toda estación (M+S) sin el símbolo 3PMSF. Sin embargo, ninguno iguala la capacidad de un neumático verdaderamente para invierno, en climas con condiciones adversas.
Specifications shown are as accurate as possible based on the information provided to us by the tire manufacturers. The dimensions reflect average values for tires measured on the specified measuring rim width. Individual tires may vary from data shown.
All tires are subject to continuous development. The tire manufacturers and Tire Rack reserve the right to change product specifications at any time without notice or obligation.
*Although regularly updated, the country of origin for tires may vary from what is shown. Unfortunately, we cannot accommodate requests for tires with a specific country of origin.
For assistance selecting products for your vehicle, please contact our sales specialists at 888-541-1777 or via email.
Warranty summary for replacement tires purchased on or after 06/01/24(1 of 6)
Treadwear:6 Years / 60,000 Miles Half mileage for rear if different size than front
Manufacturer Special Warranty:45 Day Road Test Guarantee (1)
Additional Information:(1) Exchange for another Cooper brand tire
Notes
See official manufacturer's warranty brochure for specific details.
New vehicle Original Equipment tire warranties often differ from those covering replacement tires. Consult your vehicle documents to confirm Original Equipment tire warranty coverage.
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.
Owners report excellent dry traction and confident wet performance, with scores frequently in the 9-10 range, aligning well with its all-terrain purpose. Winter traction earns praise in snow (many 8-10 ratings) but shows mixed results on ice, where some ratings dip to 4-5. Ride comfort and noise levels are consistently rated 8-10, with many noting a smooth on-road experience. Treadwear receives strong marks (8-10), appealing to drivers seeking durability. While ice performance and occasional hydroplaning concerns surface, the tire's rugged capability in dry, wet, and snowy conditions solidifies its reputation as a reliable all-terrain option for on-road adventures.
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Customers Like:
155 reviews mention "Wet Traction"
144 positive
11 negative
Customers consistently rate wet traction highly, with most scores 8-10. The Discoverer AT3 LT delivers reliable grip and confident handling in wet conditions, excelling as an all-terrain tire should.
May 09, 2022
(Verified Purchase)
4.1 out of 5
...The wet weather handeling is the best I have experienced of any tire I have tried. The tires handle snow and ice like a dedicated winter tire...
These tires are great on out 3/4ton 4x4 Suburban. The wet weather handeling is the best I have experienced of any tire I have tried. The tires handle snow and ice like a dedicated winter tire. They are quiet if rotated every 5K. The tread wear is faster than other highway tires, but the trade is worth every mile as the traction has impressed consistently. The tires can be hoppy if you don't have them roadforce balanced properly where they match the tire and rim for proper runout. Absolutely worth the money, always love a fresh set, and they work well until the tread wears to the indicator bars. A+ for an all-season highway tire that will concur rain, snow, dirt, and rocky terrain. They load up a bit in the mud, but where we live the clay will coat a mud terrain too... get snow chains and use them for mudding if you really need to get somewhere crazy.
Vehicle: 2003 Chevrolet Suburban 2500 4WD Miles Driven on Tires: 5,000 Driving Conditions: Combined Off Road/Highway Location: CARBONDALE, CO Driving Style: Average
Excellent traction while plowing heavy wet snow. Best traction ever felt in tires for 38+ years on the road...
Excellent traction while plowing heavy wet snow. Best traction ever felt in tires for 38+ years on the road. Would definitely recommend these tires to friends and family.
Vehicle: 2004 Dodge Ram 2500 QuadCab 4wd Miles Driven on Tires: 1,000 Driving Conditions: Combined Highway/City Location: WOODRIDGE, NY Driving Style: Easy Going
Winter traction receives strong ratings, with most scoring 8-10 in snow and deep snow. Ice performance is generally positive with many 9s and 10s, though some lower scores indicate variability in severe icy conditions.
August 26, 2025
3.4 out of 5
...and deep snow traction has been great...
This tire has a much smaller diameter than the OEM Goodyears despite being the same size. When viewed back to back, the AT3 LT is actually a whole inch smaller in diameter, which is unacceptable to me, and I am accounting for treadwear.
Pros: Treadwear has been very good, and deep snow traction has been great.
Cons: Sizing, noisy for a relatively mild looking tread pattern. Doesn’t particularly excel in any other area, although that could be considered a pro for a balanced AT tire.
Vehicle: 2021 Toyota Tacoma 4WD Double Cab Miles Driven on Tires: 30,000 Driving Conditions: Mostly Highway Location: FLAGSTAFF, AZ Driving Style: Average
...In the snow rushing to the airport we were safe and I was able to trust the tires. They are a perfect combination of winter and summer tire for me, ... predictable in snow and wet.
Thoroughly impressed and really happy with my purchase. I had a pop-up camper on the back of my truck and the tires were responsive and supportive. In the snow rushing to the airport we were safe and I was able to trust the tires. They are a perfect combination of winter and summer tire for me, quiet and good milage on the highway, aggressive when off road, and predictable in snow and wet.
Vehicle: 2016 Toyota Tacoma 4WD Miles Driven on Tires: 8,000 Driving Conditions: Combined Off Road/Highway Location: WINTHROP, WA Driving Style: Spirited
Customers consistently rate dry traction highly, with most scores in the 9-10 range. The Cooper Discoverer AT3 LT delivers reliable grip and responsive handling on paved surfaces, excelling in its intended all-terrain category for confident dry performance.
November 21, 2023
4.4 out of 5
...Good traction all around, even when you put it in sport mode and stomp on the gas. Can feel a bit squishy in corners, but never lost traction...
Overall a great choice. Quiet ride in all conditions - really noticeable when driving on ground-down highway between these tires and other vehicles. Good traction all around, even when you put it in sport mode and stomp on the gas. Can feel a bit squishy in corners, but never lost traction. Did notice a drop in MPG (about 2) after changing from the stock all-seasons that came with the truck. Treadwear is a bit iffy - have some odd center wear like they were severely overinflated, even though I'm religious about maintaining proper inflation and alignment. However, did a lot of heavy towing recently so I'm going to blame that. Definitely staying with Cooper AT3s.
Vehicle: 2015 Ford F150 4WD SuperCab Miles Driven on Tires: 30,000 Driving Conditions: Combined Highway/City Location: NEW BRITAIN, CT Driving Style: Average
Customers praise the Discoverer AT3 LT's comfort, with most scoring 9s and 10s in ride quality and noise. High marks highlight a smooth, quiet experience, excelling in rugged conditions while maintaining on-road refinement.
November 21, 2023
4.4 out of 5
...Quiet ride in all conditions - really noticeable when driving on ground-down highway between these tires and other vehicles...
Overall a great choice. Quiet ride in all conditions - really noticeable when driving on ground-down highway between these tires and other vehicles. Good traction all around, even when you put it in sport mode and stomp on the gas. Can feel a bit squishy in corners, but never lost traction. Did notice a drop in MPG (about 2) after changing from the stock all-seasons that came with the truck. Treadwear is a bit iffy - have some odd center wear like they were severely overinflated, even though I'm religious about maintaining proper inflation and alignment. However, did a lot of heavy towing recently so I'm going to blame that. Definitely staying with Cooper AT3s.
Vehicle: 2015 Ford F150 4WD SuperCab Miles Driven on Tires: 30,000 Driving Conditions: Combined Highway/City Location: NEW BRITAIN, CT Driving Style: Average
Very comfortable ride for an off road capable tire...
Very comfortable ride for an off road capable tire. Not a lot of miles on them yet, but pleased so far.
Vehicle: 2015 Toyota Tundra 4wd CrewMax Miles Driven on Tires: 300 Driving Conditions: Combined Highway/City Location: POUNDING MILL, VA Driving Style: Average
Smooth ride, even at highway speeds. Surprisingly quiet...
Smooth ride, even at highway speeds. Surprisingly quiet. Load rating of these tires has made it easier to haul my trailer and tractor. When towing, my truck has more controlled steering due to less drag on the rear. I've always had good luck with Cooper tires but these are the best truck tires I've ever owned. The tires hug the road, no matter the weather. Haven't had any hydroplaning issues on roads. On the job site they cut through mud and dirt easily. I rarely have to use the four wheel drive. I wouldn't go "mudding" with these tires but they aren't made for that. Haven’t had them in the snow and ice yet so I can't comment on winter driving but on wet, dry asphalt and in the mud these are the best truck tires I've owned. Too bad they are discontinuing these tires. I would definitely buy them again.
Vehicle: 2015 Chevrolet Silverado 1500 4wd Regular Cab Miles Driven on Tires: 2,500 Driving Conditions: Combined Highway/City Location: GREENWOOD, IN Driving Style: Average
Most customers rate treadwear as excellent, with scores of 9-10 highlighting durability in rugged conditions. While a few lower ratings (0-6) exist, the majority experience aligns with all-terrain tire expectations for long-lasting performance.
November 03, 2023
(Verified Purchase)
3.8 out of 5
Great. Long lasting...
Great. Long lasting. Great handling long lasting tire wear
Vehicle: 2015 Ford F150 4WD SuperCab Miles Driven on Tires: 26,000 Driving Conditions: Combined Highway/City Location: PITTSBURGH, PA Driving Style: Spirited
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.
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