Discoverer AT3 XLT™

Fits Trucks/Pickups All-Season

Discoverer AT3 XLT™ is rated 5.0 out of 5 by 8.
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Standard Limited Warranty
Free 45-Day Road Test
60,000 Mile Treadwear Protection - LT-metric sizes

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

  • 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*

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.

  • 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.

  • 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.

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 40 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
LT265/60R20 121\118R E BLK 7.5 - 9.5 8 10.7 32.52 8.78 57 3195 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
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 2016 Ram 2500 6.4 Hemi. Cooper AT3 XLT Amazing tires. I had the old AT3 on my tahoe and loved them... but was looking for something more aggressive looking for my truck and be heavy duty (80 PSI) this was exactly what I was looking for. Quiet ride, Smooth, Tow heavy loads, great in rain and dry weather, haven't tested it in snow yet but if they're anything like the old AT3. they will be great! I'm guessing better. Great looking tire. I have people going to buy them after seeing them on my truck. Changes the whole look of the truck. way better then the OEMs thank you cooper tires for finaly coming out with the perfect heavy load tires that looks and handles great. Con: two of my tires were hard to balance. Make sure you go to someone that deals with off road tires and has the machines to do so
Date published: 2018-09-07
Rated 5 out of 5 by from Amazing tire Just purchased a set of 275/65R20 for my 2018 F150. I always bought BFG KO/ KO’s in the past and wanted to try something different because I could never get the BFG’s to balance out (at least 10 or more sets on different trucks). These tires are so smooth and quiet on the highway and there is no vibration at any speed. Another reason why I bought them is because they were offered with RWL (raised white lettering) in this size. BFG does not offer RWL on any of their 20” tires now. I am not knocking BFG, they make a great tire, the sales will show, but Cooper really stepped up thier game with the new line of AT3 tires!
Date published: 2018-08-25
Rated 5 out of 5 by from Great Installed these on my 2016 Ram 1500. Very happy with the ride quality and look of the tire. They are excellent when towing my camper.
Date published: 2018-08-21
Rated 5 out of 5 by from Awesome Tire! PUT THESE ON MY 2017 RAM 2500 AND LOVE THEM! I believe COOPER has set a new standard in all-terrain tires. They are great on gravel and great in heavy rain so far from what I have experienced in 5,000 miles. Also no road noise so far.
Date published: 2018-08-21
Rated 5 out of 5 by from Wonderful tires put these on my new 2018 Ford F150 low road noise good on wet roads,and nice looking white letter tires
Date published: 2018-08-13
Rated 5 out of 5 by from Very impressed! I replaced my Nitto Terra's with AT3 XLT's on my 2015 Tundra. What a difference in ride comfort, handling and noise reduction. I have a 3 inch lift and went with 285 65/R18 tires on factory rims. Highly recommend Cooper over the competitors.
Date published: 2018-08-09
Rated 5 out of 5 by from Excellent tires! Just put these on my 2016 Ram 2500 Diesel 4x4 Limited. Totally changed the look of this truck for the better! No road noise, very comfortable ride. Installer told me after my tires were installed a guy walked in his shop, saw my truck and immediately placed on order for a set of 4 for his truck. What else do you need to know? Thank you TireBuyer.com!
Date published: 2018-07-20
Rated 5 out of 5 by from 2016 2500HD-285/75r18 mounted on 18x9 worx destroyer 813 wheels Only have 300 miles on the tires but they are great as of now. Very low noise, excellent wet and dry traction. Love the look and feel of this tire!!!
Date published: 2018-07-19
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Videos

Warranty

Standard Limited Warranty
Free 45-Day Road Test
60,000 Mile Treadwear Protection - LT-Metric Sizes


Download the 2018 Consumer Replacement Tire Guide, Limited Warranty & Registration Booklet.

Reward

  • 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.