Discoverer AT3 XLT™

Fits Trucks/Pickups All-Season

Discoverer AT3 XLT™ is rated 4.9 out of 5 by 22.
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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
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
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
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 Look great on my truck. This is my second set of Copper tires. I put them on a 2015 Ram 2500. I had the AT3's. Nice tire. Did not get the tread wear I expected. Good ride and traction. Now I have the AT3XLT. Look great. Very quiet. Only time will tell. Love Copper tires.
Date published: 2019-01-09
Rated 5 out of 5 by from Super impressed I had these tires installed yesterday. Prior to these tires I had the ST Maxx’s And about went with those again but decided to switch things up and go with more of an AT tire. Woke up to a few inches of snow and slick roads. These tires blew my mind at how well they did in these conditions. They are very quiet and smooth as well. Time will tell how well they do, but so far I’m happy with them!
Date published: 2018-12-28
Rated 5 out of 5 by from Great Tire Replaced my Kumho tires on my F250 these tires are great! Very quiet, smooth, looks are nice with the raised white letters. Wet traction very good, off road excellent. This review is written having put over 3000 miles so far. Have not used them in ths snow as of yet.
Date published: 2018-12-22
Rated 5 out of 5 by from Feels like a new truck again I don’t normally write reviews but I had to with these tires. I have a F-150 with 315/70R/17 and with the tires I had before it was like riding in my old 250 on a bad Michigan road. These tire make my truck feel like i just picked it up from the dealership. There is no noise at all I can’t believe it. I can actually hear my radio without turning it ¾ of the way up, and smooth ride. Bumps don’t knock the fillings out of my teeth anymore. I will definitely buy these tires for now on out
Date published: 2018-12-14
Rated 5 out of 5 by from Toyo Or Cooper I choose cooper due to my past experiences. Cooper has always been a good fit for my needs. The AT3 XLT 285/75r18 fits my 2016 F250 SUPERDUTY like a glove. My truck is stock not lifted, I also placed these tires on the factory rims, I researched the forums and didn't see many with this size rubbing anywhere so I took the plunge ( this size tire on my truck does not rub anywhere ). I don't have a lot of driving on these tires yet but I have been in a few different road conditions and off road conditions, pleasantly surprised with the handling, the noise level is minimal for an AT tire, cant say much yet on a slide in camper and hauling my boat but that will happen soon. Great looking tire and great handling tire as well.
Date published: 2018-12-08
Rated 5 out of 5 by from Even Better Than Expected Recently purchased these tires for my 1500 Silverado Z71. Completely changed the look from the factory Wrangler SRA’s. Even more aggressive than in than the pics. Ride is phenomenal and road noise is nonexistant. Wet traction is excellent. No snow as of yet but fully expect equally great performance. I don’t normally write reviews but had to recommend these tires.
Date published: 2018-11-29
Rated 5 out of 5 by from Total Surprise and very pleased First time ever using Cooper Tires, and I got to admit I am very pleased with the quiet and very smooth ride. I needed a more aggressive tire on my 2016 Ram 2500 Diesel an I believe I found the right tires.. Thanks Cooper Tires
Date published: 2018-11-01
Rated 2 out of 5 by from These tires are great until you put a trailer on behind. Bought these tires and they did as advertised until I put my 27' v-nose enclosed trailer on behind me. This truck and trailer combination has been the same for 5 years with no concerns. After putting these tires on pulling this trailer down the grooved interstates we have out west it was not anything I want to experiance again. Sidewalls seemed to roll to easy and the truck and trailer would not go straight down the road as I was used to.
Date published: 2018-10-26
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Videos

Warranty

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


Download the 2019 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.