Discoverer A/T3™

Fits SUVs/CUVs and Trucks/Pickups All-Season

Discoverer A/T3™ is rated 4.3 out of 5 by 250.
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Standard Limited Warranty
55,000 Mile Treadwear Protection - Light Truck sizes
60,000 Mile Treadwear Protection - SUV sizes

The Discoverer A/T3™ is an all-season, all-terrain tire designed to perform well on the highway and off for drivers of SUVs and light duty 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 Tread Width Tire Weight Max Load Tread Depth (1/32")
235/75R15 109T 560 A B XL OWL 6 - 8 6.5 9.3 28.74 6.73 33 2271 14
235/75R15 105T 560 A B STD OWL 6 - 8 6.5 9.3 28.74 6.73 32 2039 14
265/75R15 112T 560 A B STD OWL 7 - 8.5 7.5 10.5 30.55 7.72 38 2469 14
225/70R15 100T 560 A B STD OWL 6 - 7 6.5 9 27.68 6.97 30 1764 13.5
255/70R15 108T 560 A B STD OWL 6.5 - 8.5 7.5 10.3 29.09 7.95 37 2205 14
265/70R15 112T 560 A B STD OWL 7 - 9 8 10.7 29.65 8.27 38 2469 14
225/75R16 104T 560 A B STD OWL 6 - 7.5 6 8.6 29.13 6.38 30 1984 13.5
235/75R16 108T 560 A B STD OWL 6 - 8 6.5 9.3 29.72 6.73 34 2205 14
245/75R16 111T 560 A B STD OWL 6.5 - 8 7 9.6 30.31 7.05 36 2403 14
265/75R16 116T 560 A B STD OWL 7 - 9 7.5 10.5 31.57 7.72 42 2756 14
215/70R16 100T 560 A B STD OWL 5.5 - 7 6.5 8.7 27.72 6.89 30 1764 13.5
225/70R16 103T 560 A B STD OWL 6 - 7.5 6.5 9 28.66 6.97 31 1929 13.5
235/70R16 106T 560 A B STD OWL 6 - 8 7 9.4 28.82 7.4 33 2094 13.5
245/70R16 111T 560 A B XL OWL 6.5 - 8 7 9.8 29.45 7.64 36 2403 13.5
245/70R16 107T 560 A B STD OWL 6.5 - 8 7 9.8 29.45 7.64 35 2149 13.5
255/70R16 111T 560 A B STD OWL 6.5 - 8.5 7.5 10.2 30.04 7.95 38 2403 14
265/70R16 112T 560 A B STD OWL 7 - 9 8 10.8 30.39 8.27 40 2469 14
235/75R17 109T 560 A B STD OWL 6 - 8 6.5 9.3 30.75 6.85 35 2271 14
255/75R17 115T 560 A B STD OWL 6.5 - 8.5 7 10 31.97 7.44 39 2679 14
235/70R17 111T 560 A B XL BLK 6 - 8 7 9.5 30 7.44 36 2403 13.5
245/70R17 110T 560 A B STD OWL 6.5 - 8 7 9.7 30.47 7.72 37 2337 13.5
255/70R17 112T 560 A B STD OWL 6.5 - 8.5 7.5 10.2 31.18 7.91 40 2469 14
265/70R17 115T 560 A B STD OWL 7 - 9 8 10.7 31.42 8.27 42 2679 14
P285/70R17 117T 560 A B STD OWL 7.5 - 9.5 8.5 11.5 32.76 8.94 45 2833 14
235/65R17 104T 560 A B STD OWL 6.5 - 8.5 7 9.5 29.21 7.52 35 1984 13
245/65R17 107T 560 A B STD OWL 7 - 8.5 7 9.5 29.53 7.68 35 2149 13
245/65R17 111T 560 A B XL OWL 7 - 8.5 7 9.5 29.53 7.68 37 2403 13
255/65R17 110T 560 A B STD OWL 7 - 9 7.5 10.1 30.16 8.19 38 2337 13
265/65R17 112T 560 A B STD OWL 7.5 - 9.5 8 10.6 30.59 8.5 39 2469 13
235/60R17 102T 560 A B STD OWL 6.5 - 8.5 7 9.6 28.31 7.64 32 1874 12.5
255/70R18 113T 560 A B STD BLK 6.5 - 8.5 7.5 10.2 32.13 8.07 41 2535 14
265/70R18 116T 560 A B STD OWL 7 - 9 8 10.7 32.64 8.39 44 2756 14
265/65R18 114T 560 A B STD OWL 7.5 - 9.5 8 10.7 31.54 8.54 42 2601 13
275/65R18 116T 560 A B STD OWL 7.5 - 9.5 8 11 32.13 8.74 44 2756 13
265/60R18 110T 560 A B STD OWL 7.5 - 9.5 8 10.7 30.55 8.62 40 2337 12.5
275/60R20 115T 560 A B STD OWL 7.5 - 9.5 8 10.9 33.03 8.86 44 2679 12.5
275/55R20 117T 560 A B XL OWL 7.5 - 9.5 8.5 10.9 31.93 9.13 44 2833 12.5
265/50R20 107T 560 A B STD OWL 7.5 - 9.5 8.5 10.9 30.51 8.78 40 2149 12
LT235/75R15 104\101R C OWL 6 - 7 6.5 9.1 28.9 7.01 36 1985 16
30X9.50R15LT 104R C OWL 6.5 - 8.5 7.5 9.6 29.29 7.28 38 1985 16.5
31X10.50R15LT 109R C OWL 7 - 9 8.5 10.6 30.2 8.31 42 2270 16.5
32X11.50R15LT 113R C OWL 8 - 10 9 11.6 31.42 9.09 44 2535 17
33X12.50R15LT 108R C OWL 8.5 - 11 10 12.6 32.36 9.69 52 2205 17
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 44 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
LT245/75R16 108\104R C OWL 6.5 - 7.5 7 9.6 30.51 7.4 41 2205 16.5
LT245/75R16 120\116R E BLK 6.5 - 8 7 9.7 30.35 7.52 43 3042 16.5
LT265/75R16 123\120R E OWL 7 - 8 7.5 10.6 31.61 7.8 49 3415 16.5
LT265/75R16 112\109R C OWL 7 - 8 7.5 10.5 31.61 7.8 46 2470 16.5
LT285/75R16 126\123R E OWL 7.5 - 9 8 11.6 32.56 8.9 54 3750 17
LT295/75R16 128\125R E OWL 7.5 - 9.5 8 11.9 33.35 9.21 57 3970 17
LT315/75R16 127\124R E OWL 8 - 11 8.5 12.4 34.49 9.8 63 3860 17
LT245/70R16 118\115R E OWL 6.5 - 8 7 9.8 29.53 7.87 44 2910 16.5
LT255/70R16 108\104R C OWL 6.5 - 8 7.5 10.4 30.08 8.11 42 2205 16.5
LT265/70R16 121\118R E OWL 7 - 9 8 10.9 30.63 8.58 47 3195 16.5
LT305/70R16 124\121R E OWL 8 - 9.5 9 12.2 32.72 9.69 57 3525 17
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 46 3195 16
LT285/75R17 121\118S E BLK 7.5 - 9.5 8 11.5 33.82 8.9 57 3195 17
LT245/70R17 119\116S E OWL 6.5 - 8 7 9.8 30.55 7.87 44 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 114\110S C OWL 7 - 8.5 8 11.1 32.2 8.66 51 2600 16.5
LT275/70R17 121\118R E OWL 7 - 8.5 8 11 32.17 8.86 52 3195 16.5
LT285/70R17 121\118S E OWL 7.5 - 9 8.5 11.4 32.83 9.09 55 3195 17
LT295/70R17 121\118R E OWL 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 60 3195 17
LT315/70R17 121\118S E OWL 8 - 11 9.5 12.6 34.33 10 63 3195 17
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
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 59 4080 17
LT265/70R18 124\121S E OWL 7 - 9 8 10.7 32.64 8.62 54 3525 16.5
LT275/70R18 125\122S E OWL 7 - 8.5 8 11.1 33.23 8.9 54 3640 16
LT295/70R18 129\126S E BLK 7.5 - 10 8.5 12 34.25 9.41 59 4080 17
LT265/65R18 122\119R E BLK 7.5 - 9.5 8 10.7 31.54 8.7 49 3305 16
LT275/65R18 113\110S C OWL 7.5 - 9.5 8 11.1 32.09 8.9 51 2535 16
LT275/65R18 123\120S E OWL 7.5 - 9.5 8 11.1 32.09 8.9 53 3415 16
LT285/65R18 125\122S E OWL 8 - 10 8.5 11.6 32.56 9.41 56 3640 16
LT305/65R18 124\121S E BLK 8.5 - 11 9 12.2 33.58 10 59 3525 16.5
LT325/65R18 127\124R E OWL 9 - 12 9.5 13 34.61 10.59 68 3860 16.5
LT265/60R18 119\116S E BLK 7.5 - 9.5 8 10.7 30.51 8.78 48 3000 16
LT325/60R18 124\121R E BLK 9 - 12 9.5 13 33.35 10.63 61 3525 16.5
35X12.50R18LT 123R E BLK 8.5 - 11 10 12.5 34.96 9.88 63 3415 16.5
LT275/65R20 126\123S E OWL 7.5 - 9.5 8 11.1 34.21 8.9 57 3750 16
LT265/60R20 121\118R E BLK 7.5 - 9.5 8 10.7 32.52 8.78 53 3195 16
LT285/60R20 125\122S E OWL 8 - 10 8.5 11.3 33.7 9.69 59 3640 16
LT295/60R20 126\123S E BLK 8 - 10 8.5 11.5 34.13 9.72 59 3750 16.5
LT325/60R20 126\123R E OWL 9 - 12 9.5 13 35.35 10.59 67 3750 16.5
LT285/55R20 122\119R E BLK 8 - 10 9 11.7 32.36 9.69 55 3305 16
LT305/55R20 121\118S E BLK 8.5 - 11 9.5 12.2 33.35 10.31 59 3195 16
35X12.50R20LT 121R E BLK 8.5 - 11 10 12.5 34.65 10 64 3195 16.5

Reviews

Rated 5 out of 5 by from Excellent set of tires for 106,433 miles. I bought this 4x4 truck in 2012, I asked the dealership to replace the tires that were on it to what the specs call for, I had 235/70R16 put on it. Living in Northern Michigan, the summer are hot and humid and the winter road are cold, snow and icy. All I do is drive to and from work and on the weekend is haul hay to my sister inlaw house and ours. I rotate my tires every 5,000 and have my truck aligned every 30,000 miles. I don't go off-road unless its an emergency. I had 108,643 miles on the truck when I bought it and now I have 225,076 miles and I'm buying new tires soon.
Date published: 2018-07-01
Rated 1 out of 5 by from Balancing issues Keep having issues with getting them balanced. Bought LT296/75/18 for my 2016 f250, had them rebalanced 4 times, found out one tire was heavy in one spot, took 12 oz.. of weight to offset that, took it back to tire Rama and they decided to replace the tire. I'm thinking the next set of tires is gonna be Yokohama tires.
Date published: 2018-06-23
Rated 5 out of 5 by from Hard to beat! Five years driving over the USA with no flats or broken belts. A lot of back roads and trails on my Chevron with a load of 14500 lb total weight. Just about to the safety bars on the tread and will be replace with the same brand and size. Best money I spent in a long time.
Date published: 2018-06-17
Rated 2 out of 5 by from Not going to make it to the 55k warranty. I just did my first rotation at 7,252.6 miles after 9 months. For the time I've had them, they've been pretty good. I live in Northern New York where we are no stranger to snow and traction was great, in the rain as well. I drive a Ram 2500 with 6.7 L and did very little towing this time around. New tires measure 16/32 and at the rotation, they averaged at 13/32 for all 4. At this rate (average outside temp of 39 deg for the past 9 months), I will expect about 29-30k miles before getting to 4/32. However, I am moving to North Carolina with higher temperatures (which means more tire wear) and plan to do more towing (about 6k lbs usually). So we shall see, but I don't see getting the for tread life out of them. Depending on how the next rotation goes and how well they stand behind their warranty depends on how likely I will buy and recommend them to others.
Date published: 2018-06-08
Rated 5 out of 5 by from AWESOME TIRES Great handling and wet traction with very little road noise.
Date published: 2018-06-01
Rated 4 out of 5 by from Great all around tire except road noise rating is off! These tires I swear by them in the snow and rain. Great traction and great endurance. However if road noise is an issue for you and/or you do lots of highway transit. Not the best tires as there is real road noise after 45 mph but if your rolling up on pedestrians or bikes on the road they know your coming. Under that no real noise. Again best tire I ever invested in that can handle hot dry highway driving or slick snow and ice conditions.
Date published: 2018-05-29
Rated 5 out of 5 by from Excellent wear ability and tire performance Have had these 315x70x17 tires on my 2016 Cummins Ram 2500 4 door 4wd truck for 50k miles and will get another 10K easy. Only rotated every 15K to 20K with GREAT results. Since going to 35" tires from 33" tires, My gas mileage has improved by 2 mpg. My rpm's went from 1700 rpm at 76 mph to 1560 RPM at 76 mph. The Cummins does not care the size of tire that is on the truck. I will be going to the 37" A/T3 by the end of the summer. Tires went well through snow but mostly they stay on Tennessee roads year round. they worked as well on wet roads as they did on dry roads. Great tire, no problems whatsoever.
Date published: 2018-05-22
Rated 5 out of 5 by from 2007 FJ cruiser/1990 toyota 4x4 This will be my 4th set on the FJ. I have wanted to try another brand of tire just to do something different. But nothing compares they have done a great job in the snow in the Mountains. The mud and water in the swamps. And cant say enough about how great they are own the coast up and down the beach. Great job Cooper!
Date published: 2018-05-20
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Warranty

Standard Limited Warranty

60,000 Mile Treadwear Protection


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

Reward

70 Discoverer A/T3™