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Discoverer AT3 XLT™

Fits Trucks/Pickups All-Season

Discoverer AT3 XLT™ is rated 4.5 out of 5 by 67.
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Standard Limited Warranty
Free 45-Day Test Drive
96,000 km Treadwear Protection - LT-Metric Sizes

The Discoverer AT3 XLT™ with Durable Tread Technology™ haul heavy loads with less wear and are built to withstand ongoing assault from dirt and gravel.

  • Designed to prevent shredding on rocky and gravel terrain
  • Extreme durability for hauling
  • Rugged, biting edges on the shoulder of the tire, for extra grip and resistance to punctures
  • Stops on average at least 10 feet shorter on wet roads*
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Features

Dry Performance

The tire’s ability to grip the road in dry conditions.

Wet Performance

The tire’s ability to grip the road in wet conditions.

Tread Wear

The wear rate of the tire.

Quiet Ride

The measure of how quiet a tire is while driving.

Handling

How the tire is able to respond to driving such as accelerating, braking, steering and turning.

Off Road

The tire’s ability to have grip on unpaved surfaces such as dirt, mud, sand, rock or gravel.

*When compared to other Cooper® tires.

Tire Design

  • Even Wear Arc Technology™

    Tire shape engineered to strategically balance pressure at the tire-to-road contact area promoting even on-road treadwear and superior handling.

  • Whisper Grooves™

    The "Whisper Groove™" provides a sound barrier that reduces road noise.

  • Rugged Traction Shoulders

    Rugged traction shoulders provide increased off-road traction for boulder crawling and mud handling as well as additional resistance to abrasion and punctures.

  • Stone Ejector Ledges

    Ledges easily eject stones and gravel, protecting the tire from stones drilling into carcass and maintaining a clean tread for enhanced road traction.

Full Specs

Tire Size Service Description UTQG Load Range Sidewall Approved Rim Width Measured Rim Width Section Width Overall Diameter Tread Width Tire Weight Max Load Tread Depth (1/32")
31X10.50R15LT 109R C RWL 7 - 9 8.5 10.6 30.2 8.31 44 2270 16.5
32X11.50R15LT 113R C RWL 8 - 10 9 11.6 31.42 9.09 48 2535 17
33X12.50R15LT 108R C RWL 8.5 - 11 10 12.6 32.36 9.69 54 2205 17
LT285/75R16 126\123R E RWL 7.5 - 9 8 11.6 32.56 8.9 54 3750 17
LT295/75R16 128\125R E RWL 7.5 - 9.5 8 11.9 33.35 9.21 58 3970 17
LT315/75R16 127\0R E RWL 8 - 11 8.5 12.4 34.49 9.8 64 3860 17
LT305/70R16 124\121R E RWL 8 - 9.5 9 12.2 32.72 9.69 57 3525 17
LT285/75R17 121\118S E BLK 7.5 - 9.5 8 11.5 33.82 8.9 58 3195 17
LT285/70R17 121\118S E RWL 7.5 - 9 8.5 11.4 32.83 9.09 56 3195 17
LT295/70R17 121\118R E RWL 7.5 - 10 8.5 11.9 33.35 9.41 58 3195 17
LT305/70R17 121\118R E BLK 8 - 9.5 9 12.2 33.86 9.8 61 3195 17
LT315/70R17 121\118S E RWL 8 - 11 9.5 12.6 34.33 10 64 3195 17
37X12.50R17LT 124R D BLK 8.5 - 11 10 12.5 36.54 10 68 3525 18
LT285/75R18 129\126S E BLK 7.5 - 9.5 8 11.5 34.84 8.9 60 4080 17
LT265/70R18 124\121S E RWL 7 - 9 8 10.7 32.64 8.62 53 3525 16.5
LT275/70R18 125\122S E RWL 7 - 8.5 8 11.1 33.23 8.9 57 3640 16
LT295/70R18 129\126S E BLK 7.5 - 10 8.5 12 34.25 9.41 61 4080 17
LT285/65R18 125\122S E RWL 8 - 10 8.5 11.6 32.56 9.41 57 3640 16
LT305/65R18 124\121S E BLK 8.5 - 11 9 12.2 33.58 10 62 3525 16.5
LT325/65R18 127\124R E RWL 9 - 12 9.5 13 34.61 10.59 68 3860 16.5
LT325/60R18 124\121R E BLK 9 - 12 9.5 13 33.35 10.63 63 3525 16.5
35X12.50R18LT 123R E BLK 8.5 - 11 10 12.5 34.96 9.88 66 3415 16.5
LT275/65R20 126\123S E RWL 7.5 - 9.5 8 11.1 34.21 8.9 61 3750 16
LT285/65R20 127\124S E RWL 8 - 10 8.5 11.5 34.57 9.69 62 3860 16
LT265/60R20 121\118R E BLK 7.5 - 9.5 8 10.7 32.52 8.78 57 3195 16
LT275/60R20 123\120S E BLK 7.5 - 9.5 8 11 32.99 8.9 57 3415 16
LT285/60R20 125\122S E BLK 8 - 10 8.5 11.3 33.7 9.69 60 3640 16
LT295/60R20 126\123S E BLK 8 - 10 8.5 11.5 34.13 9.72 61 3750 16.5
LT325/60R20 126\123R E RWL 9 - 12 9.5 13 35.35 10.59 70 3750 16.5
LT275/55R20 120\117S E BLK 7.5 - 9.5 8.5 11.2 31.89 8.9 55 3085 16
LT285/55R20 122\119R E BLK 8 - 10 9 11.7 32.36 9.69 59 3305 16
LT305/55R20 121\118S E BLK 8.5 - 11 9.5 12.2 33.35 10.31 62 3195 16
35X12.50R20LT 121R E BLK 8.5 - 11 10 12.5 34.65 10 66 3195 16.5

Reviews

Rated 5 out of 5 by from 2017 Ram 1500 6 inch lift 35/12.50R20 I love the Cooper AT3 XLT’s! I have put 25,000 miles on these and no issues.They wear amazing. Used them in the mud,gravel,sand,rain and never any issues. Was worried about the snow and ice but recently found out they did amazing! Not one issue so far. I’d love to buy these again but would love to see Cooper do a 37/12.50R20 and I would buy again!
Date published: 2020-02-06
Rated 5 out of 5 by from Great traction, good looks, and quiet ride I drive a 1986 C10 year round in the Chicago area. Driving a 2WD pickup without weight in the back through snow can be challenging at times. I've often gotten stuck just trying to get out of the slight incline in my driveway. When it came time to replace my Michelin X radials, I was looking for a tire that would give me better traction, but also maintain the quiet ride I already had. I had narrowed my choice down to three different Cooper tires, but couldn't narrow it down to just one. When I called Cooper to discuss what I was looking for, the representative recommended the Discoverer AT3 XLT as offering me the best traction because of the saw tooth edge that's in between the treads. I must admit that the Cooper Discoverer AT3 XLT has been everything I could have hoped for. The traction has been vastly improved on snow. No more getting stuck in the driveway. Now don't get me wrong, I still don't have 4WD, but it is much more manageable to drive in the snow now. As for the road noise, it is barely louder than it was with the Michelin tires, and those were definitely a street tire. I had to really pay attention to hear the increased noise. In fact, in a modern vehicle that blocks out the outside noise better than my uninsulated truck, you'll probably never hear the road noise. The other benefit is that they are not as harsh of a ride as the Michelins were. This is likely because the Coopers are a softer rubber. This is one of the big down sides of a high mileage tire. They require a harder rubber. These Coopers have a good balance between mileage rating and ride quality. I would definitely recommend the Discoverer AT3 XLT to anyone looking for a good tire. Knowing that Cooper is always working to improve their products, I can't wait to see what they have when it's finally time to replace these tires. Thank you Cooper for the recommendation! It's been money well spent.
Date published: 2020-01-26
Rated 5 out of 5 by from Going in for a fifth set of AT3 My third set of AT3 tires barely reached the 60,000 mile mark. When I purchased my fourth set of AT3's my tire guy told me if I rotated the tires more frequently I would see much longer tire life. Following his advice my fourth set of AT3's now have 90,000 miles on them after being rotated at every oil change. If it was spring time I'd put another 5,000 miles on them. Approximately 20% of my driving is towing something heavy (7,000#). I'm going in for my fifth set of AT3 tires, this time the XLT version, I expect no less performance from the new set.
Date published: 2020-01-20
Rated 1 out of 5 by from Poor balance and out of round. I had dealership put tires on when truck is brand new. After 23,000 miles, tires show alot of wear. I've had tires balanced several times. Finally went to a tire shop that had a road Force balancer. One tire is out of round and another tire took 12 oz to balance. Worst set of Cooper's I have owned. Not sure what I'll do for my next set of tires.
Date published: 2019-12-29
Rated 5 out of 5 by from The Discoverer AT3 has every thing you may be looking for. I needed a good a around tire and my choice for years was Michelin’s LTX tire. I thought with all the Siping They would be really good in the snow but I was wrong. They were not good in the dirt or mud either. For years I went on like this until I was told to try a different product which was the Cooper Discoverer AT3. I will never go back to Michelin again. These tires do great in the mud and dirt. They do great in deep snow. I use my truck to get fire wood in the summer and I tow a big 14 thousand pound dump trailer in the woods and the tires pull the heavy load through the dirt very well. I started out using them on my 2002 Dodge diesel and then put them on my 2004 Jeep Grand Cherokee and now I am putting them on my 2017 Ram Power Wagon. I would say this tire is the best bang for the buck.
Date published: 2019-12-19
Rated 5 out of 5 by from Great value Bought these for my FJ80 Landcruiser and it looks boss! I love the white lettering. I have off road this thing in mud and dirt conditions and it is very competent. All I wonder is how they would fare in snow?? Any one from Cooper who could advise?
Date published: 2019-12-03
Rated 5 out of 5 by from As close to perfect as you can get. Installed on a 2017 Silverado 2500hd. 265/60r20 e rated. I am a contractor and coopers are on all my vehicles. Work vehicles and personal. The Goodyear’s that come on my truck was useless around job sites. These coopers will easier go in 2wd , the Goodyear’s was a struggle in 4wd. The tires are as quiet and smooth as a set of Michelin except they have superior traction. I will continue to buy coopers. plus they are reasonably price compared to other name brand tires.
Date published: 2019-11-23
Rated 5 out of 5 by from Cooper AT3 XLT Well made the switch last week to the coopers after being a Michelin guy. So far I’m in pressed. They ride good, I hope I can get 55k out of these new coopers. Had to do a lot of interfering. I will keep you advise after my second trip to outer banks this week.
Date published: 2019-11-17
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Warranty

Standard Limited Warranty
Free 45-Day Test Drive
96,000 km Treadwear Protection - LT-Metric Sizes

Download the 2019 Consumer Replacement Tire Guide, Limited Warranty & Registration Booklet.

Reward

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  • Wet stopping distance as compared to leading LT-denoted all-terrain tires reviewed on well-known consumer ratings sites. Individual on-road results may vary.