Discoverer AT3 LT™

Fits Truck All-Season

Discoverer AT3 LT™ is rated 3.7 out of 5 by 19.
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Standard Limited Warranty
Free 45-Day Test Drive
60,000 Mile Treadwear Protection - LT-Metric sizes

The Discoverer AT3 LT™ with Durable Tread Technology™ hauls 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
  • 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.

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")
LT215/85R16 115\112R E BLK 5.5 - 7 6 8.4 30.31 5.98 38 2680 16.5
LT235/85R16 120\116R E BLK 6 - 7.5 6.5 9.4 31.77 6.69 43 3042 16.5
LT225/75R16 115\112R E BLK 6 - 7 6 8.5 29.33 7.01 39 2680 16.5
LT245/75R16 120\116R E OWL 6.5 - 8 7 9.7 30.35 7.52 44 3042 16.5
LT265/75R16 123\120R E OWL 7 - 8 7.5 10.6 31.61 7.8 51 3415 16.5
LT265/75R16 112\109R C OWL 7 - 8 7.5 10.5 31.61 7.8 48 2470 16.5
LT245/70R16 118\115R E OWL 6.5 - 7 7 9.8 29.53 7.87 43 2910 16.5
LT265/70R16 121\118R E OWL 7 - 8.5 8 10.9 30.63 8.58 47 3195 16.5
LT235/80R17 120\117R E OWL 6 - 7.5 6.5 9.2 31.77 6.69 43 3085 16.5
LT225/75R17 116\113R E BLK 6 - 7.5 6 8.7 30.35 7.01 41 2755 16.5
LT245/75R17 121\118S E OWL 6.5 - 7.5 7 10 31.5 7.64 47 3195 16
LT245/70R17 119\116S E OWL 6.5 - 8 7 9.8 30.55 7.87 45 3000 16.5
LT265/70R17 121\118S E OWL 7 - 8.5 8 10.9 31.65 8.62 50 3195 16.5
LT265/70R17 112\109S C OWL 7 - 8.5 8 10.6 31.57 8.62 47 2470 16.5
LT275/70R17 121\118R E OWL 7 - 8.5 8 11 32.17 8.86 52 3195 16.5
LT265/65R17 120\117R E OWL 7.5 - 9.5 8 10.7 30.51 8.7 47 3085 16
LT275/65R17 121\118S E OWL 7.5 - 9.5 8 11 31.1 8.9 50 3195 16
LT285/65R17 121\118S E OWL 8 - 10 8.5 11.5 31.57 9.41 52 3195 16
LT265/65R18 122\119R E BLK 7.5 - 9.5 8 10.7 31.54 8.7 48 3305 16
LT275/65R18 123\120S E OWL 7.5 - 9 8 11.1 32.09 8.9 54 3415 16
LT265/60R18 119\116S E BLK 7.5 - 9.5 8 10.7 30.51 8.78 49 3000 16

Reviews

Rated 1 out of 5 by from Worst Tires I’ve Ever Owned These things are terrible. All of mine leak because the beads don’t seal so I’m constantly adding air about every three days. They are EXTREMELY noisy to the point where I can’t stand to drive my vehicle long distances anymore. And the fuel efficiency on my Jeep Grand Cherokee went down 3+ MPG when I had these installed. Never again.
Date published: 2019-10-13
Rated 5 out of 5 by from Very Quiet Smooth Ride Incredible ride! I was amazed at how much quieter these tires are compared to my last set. Great traction in rain, gravel and highway. I am more than pleased.
Date published: 2019-09-13
Rated 2 out of 5 by from BALANCE PROBLEMS HAD BIG O TIRES AND SWITCHED TO LT AT/3 AND FROM THE GET GO HAD TO TAKE BACK FELT BALANCE VIBRATION.AFTER THIRD TRY WITH BIG O AND STILL HAD A ISSUE HAD TO CALL MYSELF AND GET A APPROVAL FOR A REPLACEMENT THAT I FELT WAS THE RIGHT REAR. ONCE THAT TIRE WAS REPLACED IT WAS BETTER. I NOW HAVE READ THAT THE LT AT/3 HAVE HAD SOME BALANCE ISSUES FOR MORE THAN JUST ME.
Date published: 2019-08-26
Rated 4 out of 5 by from Excellent except wear could be better I use these on a Chev 2500HD that mostly hauls a truck camper. Roads traveled: About 60% highway, 35% paved 2º, 5% dirt/gravel. Reasonably quiet, fairly good in the snow, good in mud, excellent in the rain, rock solid dependable. I do not get 60K out of a set but, I suppose, that's to be expected with 2700 lb+ camper sitting in the back most of the time. This is my third set; God willing there'll be a fourth.
Date published: 2019-08-22
Rated 5 out of 5 by from Excellent Tire Put these on my 2004 Ram 1500 and they are great. I have 60,000 plus miles on them now and they have not let me down. I am a nurse and have to travel daily for work so weather cannot stop me. They work great for off road, snow, rain and daily driving. I would recommend them to anyone. Cooper makes great tires.
Date published: 2019-08-12
Rated 5 out of 5 by from Outstanding heavy load handling, mileage Now wearing out my second set of AT3's on my Dodge Diesel. Outstanding handling and control with over 20,000 lbs on the back. The best sidewall of any tire I have purchased over the past 50 years. I am in the process of purchasing my next set.
Date published: 2019-08-08
Rated 5 out of 5 by from the best tires I've bought I bought other tires and they don't compare with Cooper
Date published: 2019-07-31
Rated 1 out of 5 by from Cooper let Down I bought a Brand New set of Cooper Discoverer Size 265/70r/16 Really liked the tires , nice ride, smooth, and Quiet, yet still sturdy enough to handle getting off in the fields and working , But unfortunately all that changed suddenly this past Tuesday 7/23/19 I was in the middle lane of 465 moving along in a fast yet sturdy clip, when suddenly my right front tire just went flat , no rhyme or reason I quickly turned my signal on to get over and as usual traffic would not let me, and I can feel my truck leaning more and more I suddenly got a break and was able to get to a save place on the shoulder, where I was able to get my spare mounted and get out of this dangerous situation, I then go to my Cooper Tire Dealer he tells me Cooper will stand behind the tire and I’ll receive a new tire if my tread Depth is 2.32 or more and of course my were so he begins to break down the tire off the rim and inside is a small pile of ground rubber he immediately tells me warranty is void because I drove on them in order to get out of the middle of the Interstate, what was I to do just stop and get hit , he clearly sees this a new tire yet will not cover it due to it going flat as I was trying to get to safety what a screw job , never again will any of my trucks or autos use Cooper Tires
Date published: 2019-07-25
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Videos

Warranty

Standard Limited Warranty
Free 45-Day Test Drive
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.