Cooper

Cooper Stronghold AT - LT265/60R20/E 121/118S Tire

|29 ratings
Item # 984214785
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Smart summary

Generated by AI
  • Tire Specifications: Cooper Discoverer Stronghold AT tire, sized LT265/60R20/E with a 121/118S load/speed rating, featuring a black sidewall.
  • All-Terrain Capability: Engineered as an all-terrain tire for heavy-duty pickup trucks, designed to handle heavy loads and long highway hauling.
  • Robust Tread: Features strategically designed tread lugs that resist cracking, tearing, and rounding, with ledges between lugs to prevent stone retention.
  • Advanced Traction: Features a specialized rubber compound and wide lateral grooves for effective water plowing. Delivers solid grip on dirt and gravel with wide open grooves for soft surfaces and narrower center grooves for stability.
  • Winter Performance: Offers great snow traction due to textured shoulder edges that grab into snow, meeting the Three-Peak Mountain Snowflake Designation for severe winter conditions.
Cooper Stronghold AT - LT265/60R20/E 121/118S Tire
Cooper Stronghold AT - LT265/60R20/E 121/118S Tire
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About this item

Product details

Before purchasing tires, make sure to use our Tire Finder to select the right fit for your vehicle.

Cooper introduces the Discoverer Stronghold AT. Strong and Durable, and backed by a 60,000 mile warranty, this tire will last until the job is done! Strategically designed tread lugs help to resist cracking, tearing, and rounding of the tread. Ledges between the lugs help prevent stones getting stuck in tread. The Stronghold is protected from demanding environments. A specialized rubber compound and wide lateral grooves help plow through water, providing maximum traction.

Solid Traction in Dirt and Gravel
Wide open grooves in the tread grab and release soft surfaces, while the narrower center grooves help to provide stability.

Strength that Lasts the Test of Time
Strong shoulder design features such as scooped tread edges, wide tread grooves, and sidewall hook pattern all help provide grip and traction for the life of the tire.

Great Snow Traction
Textured edges on the shoulders grab into snow to help provide traction in harsh winter conditions.

Three-Peak Mountain Snowflake Designation
Tires designed for use in severe snow conditions and meet specific snow performance test requirements.

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Specifications

Product Details
Tire Size:LT265/60R20/E
Service Description:121/118S
Sidewall:Black sidewall
Material # or MSPN:170-301-048
Rim Width (min. to max.):8.0-9.5
Section Width:10.7
Overall Diameter:32.5
Tread Depth (32nds):17
RPM:640
Max Load (lbs.):3195 lbs @ 80 psi
UTQG Rating
Treadwear:0
Traction:0
Temperature:0

Warnings and disclaimers

Disclaimer

Wheel Not Included

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Showing 1-3 of 11 reviews

May 12, 2026
Anonymous
5 out of 5 stars review

Verified Purchase

COOPER TIRES

Great looking tires should last me a couple of years if no flats etc.. They ride quiet and impressed with how they handle the road.

Helpful?3CAGUB3JSD4K13692866335
Jun 30, 2026
anonymous
5 out of 5 stars review

Cooper Stronghold AT

Installed a set of 6 Cooper Stronghold AT's on my Ford F350 4x4 Dually about 14 months ago and I've put about 8K miles on them and so far they still look new. They have performed well in all conditions. I've logged about 3500 miles towing a large 5th wheel RV with no adverse issues. Highly recommend them.

Helpful?3CAGUB3JSD4K13692866335
Jan 15, 2026
anonymous
5 out of 5 stars review

aggressive AT tire

Had these Coopers installed this morning. Drove back home on a mix of interstate and Ohio back roads. It snowed last night so some roads were covered with about 1" of snow and others were dry. Tires handled great. Had a tad more road noise than the Mastercrafts they replaced (you can see them in bed in one of the pictures) but I'm not driving a 1 ton diesel because of the smooth quiet ride it has. As soon as I got home I drove around one of my fields and the tires done great. They had 3 other E rated AT's in stock so I was able to directly compare them. These and the Toyo At's were the most aggressive looking tread and looked like both weighted heavily towards off-road ability. The Wildpeak At 4 and Pirelli scorpion AT plus looked less aggressive and more weighted towards on road manners. These Coopers had the most aggressive sidewall biters out of them all and spacing between lugs that was atleast as wide as the Toyos and wider than the other two. These coopers were the least expensive. Cooper and Toyo were the only two Made in USA. They all had the 3peak snow designation. Tread depth looked the same between the Wildpeak, Toyo and Cooper and looked more than the Pirelli. None of these tires are Super Swamper aggressive but they did well in my snowy field and I believe they would do well on the job site or going down an abandoned coal mine road in Southern West Virginia. So if you're looking for a tire with good road characteristics and still pretty aggressive off-road these Coopers are what you're looking for.

Helpful?3CAGUB3JSD4K13692866335

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