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Cooper Discoverer Stronghold AT All-Terrain Tire, LT275/60R20, Set of 1

  • Based on 82 reviews
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Availability: In Stock.
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Arrives Sunday, Oct 25
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Size: 275/60R20


Features

  • STRONGHOLD AT Built with durability in mind, the Cooper Discoverer Stronghold AT SUV & Truck Tire tackles difficult terrain to help your vehicle get the job done
  • ALL-TERRAIN TIRE Tough jobs demand tough tires, and the Stronghold AT delivers the traction you need when it matters most; wide open grooves in the tread grab and release soft surfaces, while Coopers 3D-sipe technology helps to provide stability
  • STRONG AND DURABLE This all-terrain Cooper Discoverer Stronghold Tire provides grip and traction for the life of the tire; these new tires resist cracking, tearing, and rounding of the tread, and prevent stones from getting stuck in the tires tread
  • GREAT SNOW TRACTION Textured edges on the shoulders of the truck and SUV tire grab into snow to help provide traction in harsh winter conditions; Severe Snow Designation/Three-Peak Mountain Snowflake Certified
  • 45-DAY TEST DRIVE Take time to make sure these new SUV & truck tires are the right ones for your vehicle; Cooper Tires offers a 45-Day Test Drive to test out your new tires

Description

Built with durability in mind, the Cooper Discoverer Stronghold AT SUV and Truck Tires tackle difficult terrain to help your vehicle get the job done. It outperforms the Toyo Open Country A/T III in dirt and wet road handling, and when stopping on snow covered roads. Tough jobs demand tough tires, and the Stronghold AT delivers the traction you need when it matters most. Wide open grooves in the tread grab and release soft surfaces, while Cooper’s 3D-sipe technology helps to provide stability. This all-terrain tire provides grip and traction for the life of the tire. These tires resist cracking, tearing, and rounding of the tread, and prevent stones from getting stuck in the tread. Textured edges on the shoulders of the truck and SUV tire grab into snow to help provide traction in harsh winter conditions. The Cooper Discoverer Stronghold AT is protected by a 60,000 Miles Limited Treadwear Warranty. Cooper Tires offers a 45-Day Test Drive to test out your new tires. We’ve spent over a century building quality tires that are made to last. Incredible performance, reliable safety, and a price that won’t break the bank. That’s what you can expect from a Cooper Tire. Based on internal testing comparing Cooper Discoverer Stronghold AT (LT275/65R18) to Toyo Open Country A/T III (LT275/65R18) on a 2020 Chevrolet Silverado 2500 HD. Actual results may vary.

Brand: Cooper


Size: 275/60R20


Rim Size: 20 inches


Section Width: 27.5 centimeters


Tire Aspect Ratio: 60


Load Index: 123


Speed Rating: S


Load Capacity: 3415 pounds


Tread Depth: 16 millimeters


Tread Type: Symmetrical


Rim Size: 20 inches


Load Index: 123


Speed Rating: S


Load Capacity: 3415 pounds


Tread Type: Symmetrical


Maximum Pressure: 80 psi


Automotive Fit Type: Universal Fit


Load Range: E


Construction Type: Radial


Seasons: Year Round


Brand Name: Cooper


UPC: 029142992998


Global Trade Identification Number: 98


Number of Packs: 1


Item Highlight: Light Truck All Terrain All Weather Traction 123/120S Rated E (10 Ply) Radial Construction Black Sidewall Tire


Unit Count: 1 Count


OEM Equivalent Part Number: COOP-170278048


Included Components: Tire Only


Item Type Name: automotive-light-truck-and-suv-all-terrain-tires


Manufacturer: Cooper


Model Number: 170278048


Manufacturer Part Number: 170278048


Manufacturer Warranty Description: 60000 Miles


Size: 275/60R20


Section Width: 27.5 centimeters


Tire Aspect Ratio: 60


Tread Depth: 16 millimeters


Rim Width: 8 inches


Tire Diameter: 32.99


Item Dimensions: 33 x 10.8 x 33 inches


Item Diameter: 20 inches


Item Weight: 44 pounds


Vehicle Tire ISO Metric Size Description: 275/60R20


Ply: 2-Ply


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great serves
Size: 275/60R20
Great!!!!
Reviewed in the United States on October 1, 2026 by Steve Berlanga

  • Great
Size: 275/65R20
They get the job done
Reviewed in the United States on June 18, 2026 by drake

  • Great tires.
Size: 275/70R18
I love these tires. They look great on my truck, they are quiet going down the road and they are super stout. Have bought them a couple of times.
Reviewed in the United States on August 23, 2025 by RLO

  • Great Tires and extremely fast shipping.
Size: 275/60R20
Excellent seller.
Reviewed in the United States on July 8, 2026 by Scotty Pratt

  • Do not recommend vibrate and loud!
Size: 245/75R17
Very disappointed with these. Bought a set for a 2022 F250 and a 2023 F250. Cooper is a great brand and MADE IN USA is a plus. Always try to buy domestic if it's possible. I have had phenomenal results with the Cooper At3 XLT tires very smooth and quiet. Ordered the Stronghold AT for a slightly different look and a bit more aggressive tread. These ride and sound like a BIAS Ply Mud Tire. They are horrible and vibrate my teeth at certain speeds. I have contacted Cooper hoping they will do the right thing and let me exchange these for AT3's. ... show more
Reviewed in the United States on April 25, 2025 by Ira

  • Very noisy at highway speeds above 60+
Size: 265/70R17
Completely changed the look of trucks shoes, handling & feel of steering. Absolutely 💯 luv these tires. But.. Very noisy at highway speeds 60 on up!!! As most of daily drive is 90° highway, just can not give these tires above a 4.
Reviewed in the United States on September 24, 2026 by david kirkpatrick

  • Great!
Size: 295/70R18
New favorite tire after 6months
Reviewed in the United States on June 21, 2026 by Laura

  • Great snow and ice performance
Size: 275/55R20
Amazing traction on snow and ice, gives full confidence in poor conditions. Haven't been able to test them in the rain but I have full confidence they will perform great. Very low noise on dry pavement no more than a regular street tire. Primarily bought for winter and I'm very happy with there performance and have a 60,000 mile warranty. ... show more
Reviewed in the United States on December 25, 2025 by Steve

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