Cooper Discoverer AT3 LT Review

One of the newest off-road tire offerings from Cooper Tires, the Discoverer AT3 LT is part of the expanded AT3 lineup and is designed as a purpose built all-terrain tire for light trucks and pickups.

cooper discoverer at3 lt review


  • Great warranty
  • Off-road durability
  • Wet weather traction


  • Limited sizes


With plenty of off-road style, the Discoverer AT3 LT actually delivers when it comes to true performance too with the all-terrain capability one would expect from the trusted Discoverer lineup.

In terms of on-road performance, the AT3 LT also shines. It incorporates a Cooper’s “even wear arc technology” which is designed to deliver a consistent contact patch to the road even as the tire wears down over time. This tire is designed specifically for those who use their pickups for towing or hauling payload, ensuring longevity of the rubber and consistent performance over time.

And to show just how much Cooper backs this design, they’ve put a 60,000 mile limited treadwear warranty on the tire. We’re impressed!

Looking closely between the outside treadblocks and the line of treadblocks next to it, you can notice serrated edges. While they look designed for gripping, they’re actually Cooper’s patented “whisper grooves” which help deliver quiet on-road performance.

With solid dry road performance, the AT3 LT is particularly good in the wet (adding to your piece of mind if your towing). In fact, Cooper claims it stops as much as 10 feet shorter next to comparable all-terrain tires.

But there’s more to this tire than just on-road sensibility.

On the side of each treadblock you’ll also notice small ledges between the block itself and the base of the tire. These are stone ejectors designed to prevent small rocks from getting stuck between the tread and prematurely wearing the tire.

Overall, the AT3 LT is a unique on and off-road truck tire that’s built for those who actually use their pickups for hard work.


What Vehicles Will the Cooper Discoverer AT3 LT Fit On?

Chevrolet Colorado, Silverado 1500

Ford F-150

GMC Sierra

Nissan Titan

RAM 1500

Toyota Tundra, Tacoma


Cooper Discoverer AT3 LT Price

While retailers can set their own prices, the Cooper Discoverer AT3 LT starts at toughly $144 per tire.


Cooper Discoverer AT3 LT Warranty

The Discoverer AT3 LT comes with an impressive 60,000 mile limited treadwear warranty on LT-metric sizes. In addition, like all Cooper tires it comes with a free 45-day road test.

Cooper Discoverer AT3 LT Sizes

16-inch tires


17-inch tires

18-inch tires

Are Cooper Tires a Good Tire?

Cooper Tires isn’t a household name like Michelin or Pirelli, but these are Tier 1 tires.

Made in the USA at several different cities, the brand’s corporate headquarters is in Findlay, Ohio

Cooper has been around for over 100 years and has a long history of involvement in motorsports, from off-road truck racing to formula cars, using that race experience to help engineer better on-road (and off-road) tires.


Who Are Cooper Tires Made By?

Many tire manufacturers are actually all rebranded versions of other tires. That is not the case with Cooper.

In fact, Cooper is the parent company to other tire brands like Avon Tyres, which are sold in Europe. Avon also makes motorcycle tires.

Cooper also owns Mickey Thompson tires, a legendary brand in drag racing.