Discoverer A/T3™

Fits Trucks/Pickups All-Season

Discoverer A/T3™ is rated 4.3 out of 5 by 219.
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Standard Limited Warranty
55,000 Mile Treadwear Protection

The Discoverer A/T3™ is an all-season, all-terrain tire designed to perform well on the highway and off for drivers of pickup trucks.

  • Excellent highway performance
  • Excellent wet traction
  • Improved treadwear and traction in rocky and gravel terrain

M+S Rated

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

  • Aggressive 5-Rib All-Terrain Design

    For all-terrain performance, all-season traction, stability, handling and treadwear.

  • Coupled Tread Elements

    Excellent stability and confident handling.

  • Wide Circumferential Grooves

    Improves soft surface traction, aids in the tires' ability to clean itself, resistance to hydroplaning and stone retention.

Full Specs

Tire Size Service Description UTQG Load Range Sidewall Approved Rim Width Measured Rim Width Section Width Overall Diameter Tire Weight Max Load Tread Depth (1/32")
LT235/75R15 104\101R C OWL 6 - 7 6.5 9.1 28.9 36 1985 16
30X9.50R15LT 104R C OWL 6.5 - 8.5 7.5 9.6 29.29 38 1985 16.5
31X10.50R15LT 109R C OWL 7 - 9 8.5 10.6 30.2 44 2270 16.5
32X11.50R15LT 113R C OWL 8 - 10 9 11.6 31.42 47 2535 17
33X12.50R15LT 108R C OWL 8.5 - 11 10 12.6 32.36 52 2205 17
LT215/85R16 115\112R E BLK 5.5 - 7 6 8.4 30.31 38 2680 16.5
LT235/85R16 120\116R E BLK 6 - 7.5 6.5 9.4 31.77 43 3042 16.5
LT225/75R16 115\112R E BLK 6 - 7 6 8.5 29.33 39 2680 16.5
LT245/75R16 120\116R E OWL 6.5 - 8 7 9.7 30.35 44 3042 16.5
LT245/75R16 108\104R C OWL 6.5 - 7.5 7 9.6 30.51 42 2205 16.5
LT245/75R16 120\116R E BLK 6.5 - 8 7 9.7 30.35 43 3042 16.5
LT265/75R16 123\120R E OWL 7 - 8 7.5 10.6 31.61 49 3415 16.5
LT265/75R16 112\109R C OWL 7 - 8 7.5 10.5 31.61 46 2470 16.5
LT285/75R16 126\123R E OWL 7.5 - 9 8 11.6 32.56 54 3750 17
LT295/75R16 128\125R E OWL 7.5 - 9.5 8 11.9 33.35 57 3970 17
LT315/75R16 127\124R E OWL 8 - 11 8.5 12.4 34.49 63 3860 17
LT245/70R16 118\115R E OWL 6.5 - 8 7 9.8 29.53 43 2910 16.5
LT255/70R16 108\104R C OWL 6.5 - 8 7.5 10.4 30.08 43 2205 16.5
LT265/70R16 121\118R E OWL 7 - 9 8 10.9 30.63 46 3195 16.5
LT305/70R16 124\121R E OWL 8 - 9.5 9 12.2 32.72 57 3525 17
LT235/80R17 120\117R E OWL 6 - 7.5 6.5 9.2 31.77 43 3085 16.5
LT225/75R17 116\113R E BLK 6 - 7.5 6 8.7 30.35 41 2755 16.5
LT245/75R17 121\118S E OWL 6.5 - 7.5 7 10 31.5 46 3195 16
LT285/75R17 121\118S E BLK 7.5 - 9.5 8 11.5 33.82 57 3195 17
LT245/70R17 119\116S E OWL 6.5 - 8 7 9.8 30.55 44 3000 16.5
LT265/70R17 121\118S E OWL 7 - 8.5 8 10.9 31.65 49 3195 16.5
LT265/70R17 112\109S C OWL 7 - 8.5 8 10.6 31.57 47 2470 16.5
LT275/70R17 114\110S C OWL 7 - 8.5 8 11.1 32.2 51 2600 16.5
LT275/70R17 121\118R E OWL 7 - 8.5 8 11 32.17 52 3195 16.5
LT285/70R17 121\118S E OWL 7.5 - 9 8.5 11.4 32.83 55 3195 17
LT295/70R17 121\118R E OWL 7.5 - 10 8.5 11.9 33.35 58 3195 17
LT305/70R17 121\118R E BLK 8 - 9.5 9 12.2 33.86 60 3195 17
LT315/70R17 121\118S E OWL 8 - 11 9.5 12.6 34.33 63 3195 17
LT265/65R17 120\117R E OWL 7.5 - 9.5 8 10.7 30.51 47 3085 16
LT275/65R17 121\118S E OWL 7.5 - 9.5 8 11 31.1 50 3195 16
LT285/65R17 121\118S E OWL 8 - 10 8.5 11.5 31.57 52 3195 16
37X12.50R17LT 124R D BLK 8.5 - 11 10 12.5 36.54 69 3525 18
LT285/75R18 129\126S E BLK 7.5 - 9.5 8 11.5 34.84 59 4080 17
LT265/70R18 124\121S E OWL 7 - 9 8 10.7 32.64 54 3525 16.5
LT275/70R18 125\122S E OWL 7 - 8.5 8 11.1 33.23 54 3640 16
LT295/70R18 129\126S E BLK 7.5 - 10 8.5 12 34.25 59 4080 17
LT265/65R18 122\119R E BLK 7.5 - 9.5 8 10.7 31.54 48 3305 16
LT275/65R18 113\110S C OWL 7.5 - 9.5 8 11.1 32.09 51 2535 16
LT275/65R18 123\120S E OWL 7.5 - 9.5 8 11.1 32.09 53 3415 16
LT285/65R18 125\122S E OWL 8 - 10 8.5 11.6 32.56 56 3640 16
LT305/65R18 124\121S E BLK 8.5 - 11 9 12.2 33.58 59 3525 16.5
LT325/65R18 127\124R E OWL 9 - 12 9.5 13 34.61 71 3860 16.5
LT265/60R18 119\116S E BLK 7.5 - 9.5 8 10.7 30.51 49 3000 16
LT325/60R18 124\121R E BLK 9 - 12 9.5 13 33.35 61 3525 16.5
35X12.50R18LT 123R E BLK 8.5 - 11 10 12.5 34.96 63 3415 16.5
LT275/65R20 126\123S E OWL 7.5 - 9.5 8 11.1 34.21 57 3750 16
LT265/60R20 121\118R E BLK 7.5 - 9.5 8 10.7 32.52 52 3195 16
LT285/60R20 125\122S E OWL 8 - 10 8.5 11.3 33.7 59 3640 16
LT295/60R20 126\123S E BLK 8 - 10 8.5 11.5 34.13 59 3750 16.5
LT325/60R20 126\123R E OWL 9 - 12 9.5 13 35.35 67 3750 16.5
LT285/55R20 122\119R E BLK 8 - 10 9 11.7 32.36 55 3305 16
LT305/55R20 121\118S E BLK 8.5 - 11 9.5 12.2 33.35 59 3195 16
35X12.50R20LT 121R E BLK 8.5 - 11 10 12.5 34.65 64 3195 16.5

Reviews

Rated 5 out of 5 by from Nothing But Coopers I have been running cooper tires since the mid 60's, living back east in the snow belt they seem to be the best tires on the road even back than... With snow and ice not to over look pot holes up the butt, they always took a licking and kept on ticking... Today I get them rotated and balanced every 5000 miles like clock work...... Now living the west coast and a lot older, I still run and trust cooper tires on all my cars and trucks... I have 40 grand on mine on my gmc sierra all terrain and a lot of high speed freeway driving, they have done a awesome job for me so far.... Ride great at 35lbs with nitrogen in them, handle the same, and even pulling my boat or travel trailers they are firm, and steady even with the traction control off... I did a tread depth check today, and I am amazed that they still have 11 and 12/32 across the 4 tires... Not bad for tires that roll over 125mph or pull trailers like I do... They grip pretty descent in hard rain, sand and snow doesn't bother them, and I like the fact that they are still quiet at all speeds and road suffices... I don't expect to get 100,000 miles with them but I'd never run my tires that long anyway, after 50% wear I start looking to replace all my tires.... My tire shop manager tells me I throw away better tires than most people run on their cars as a rule... They hold their tire pressures really good too......
Date published: 2017-10-19
Rated 5 out of 5 by from Good tires 88,618 miles on my first set of Cooper A/T3. 2012 F150. Use every day for work, Tow 22' boat, landscape trailer and quad trailer. Rotated regularly, wear great, ride smooth and quiet. Put my second set on today will let you know. 275 65R18
Date published: 2017-09-29
Rated 5 out of 5 by from Best tire ever I went into my local cooper sales shop Adrian auto center in Newport last year looking for some good rubbers for my pick up when I spoke with the owner he recommended that I try this tire out I said I'll give I'm a shot Spence then he is my go to for everything best tires IV ever had I love them so much I worked on a ski resort in the winter and on a lake in summer hands down the best tire for year round amazing traction from ice and deep snow to Mt side dirt roads and ending twisting paved roads hands down the tire went far past what I needed and then sum amazing all the way around I put over 50k miles on and they were still going great tires will buy them again this year for my new truck
Date published: 2017-09-24
Rated 5 out of 5 by from Love these Tires Cooper makes the best tire for my trucks and SUV. I will never get any thing else!
Date published: 2017-09-24
Rated 5 out of 5 by from 2nd set We purchased a set of four Cooper Discover A/T13 when our Nissan Fronteir had 35,000 miles on it, we just replaced them at mileage nearing 118,000. Cannot say enough about the quality of this tire, believe it or not we were not even to the wear bar yet!! Superb Hoping our experience with this second set is as wonderful
Date published: 2017-09-20
Rated 1 out of 5 by from Product is defective Tire shop could not balance one of the tires. The tire was out of round.
Date published: 2017-09-16
Rated 1 out of 5 by from Balance issues, defective tires, never Cooper again I got 5 of these for my Jeep in 285/70/17 and have had balancing issues from the start. One tire I have been told by 2 places that it is defective and can't be balanced, went to try road force balance and it wanted 17oz of weight! At least 2 others have a wobble in them and can't get it out as well. Tire place I got them from doesn't want to hear or do anything. Tread wear now at 35k miles is pretty good, but I can't wait to get these off my ride, sorry I wasted my money on these
Date published: 2017-08-26
Rated 5 out of 5 by from Liked them so well - I bought a second set... after 55k miles! 2005 1/2 ton Suburban Originally wanted the AT/W but these had come out and the salesman talked me into these. I pull occasionally (camper, boy scout trailers etc.) but most miles were just the vehicle. I wasn't faithful at getting rotations - one time it was 10K miles - had some wearing issues at about 25k to 30k miles. Just rotated them like manufacturer suggested..... ran them until the end of June.. looked at them and decided needed new tires before taking the boy scouts to summer camp (1,400 mile round trip - pulling a trailer loaded with 7 boys). I put another set of AT/3's on - good tire - great ice and snow traction up here in North Dakota. I have read the other reviews... people talk about wind noise.. these tires are quiet... they must be putting bigger tires than manufacturer specified... my new tires run so quiet I have driven 100 miles with the radio off just so I can enjoy the quiet!
Date published: 2017-08-18
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Videos

    Warranty

    Standard Limited Warranty

    55,000 Mile Treadwear Protection


    Download the 2017 Consumer Replacement Tire Guide, Limited Warranty & Registration Booklet.

    Reward

    This tire does not qualify for a reward at this time.