Cooper Discoverer A/T3 4S

The Discoverer AT34S provides reliable performance for SUVs and light duty pick-up trucks. Featuring Adaptive-Traction Technology™, the Discoverer AT34S is designed to grip the driving surface, whether rocky or smooth, in hot or cold weather conditions. The tire is constructed using an innovative silica-based tread compound and Cooper’s Sure-Grip™ five-rib, all-terrain pattern to provide off-road driving capability and excellent wet and dry traction. Its zigzag sipes improve vehicle stability while reducing stone retention, and uniquely shaped deep center grooves reduce hydroplaning. Severe weather rated, the Discoverer AT34S has patented saw tooth technology designed to trap snow in the tread to provide superior stopping distance on snowy surfaces. The AT34S is available in 37 sizes from 15-20 inch rim diameters.

Dry Grip 83%
Wet Grip 83%
Road Feedback 73%
Handling 80%
Wear 77%
Comfort 83%
Buy again 81%
Snow Grip 90%
Ice Grip 80%

Tire review data from 7 tire reviews averaging 81% over 81,200 miles driven.

The Discoverer A/T3 4S is ranked 7th of 25 All Season Premium Touring tires.

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Size Price Range  
225/70 R15 $199.99 - $199.99 (1 Prices) Compare Prices >>
265/60 R18 $258.99 - $258.99 (1 Prices) Compare Prices >>
265/70 R15 $206.99 - $206.99 (1 Prices) Compare Prices >>
Available in 38 tire sizes - View all.

Top 3 Cooper Discoverer AT3 4S Reviews

Given 80% while driving a Ford F 150 (235/35 R16) on a combination of roads for 1,500 average miles
Use many off-road. Exceptional grip in sand. Several friends have Cooper tires on heavier vehicles. They recommend Cooper tires to me because of all around performance. So far very satisfied.
Helpful 17 - tire reviewed on April 24, 2023
Given 89% while driving a Ford F 150 (265/75 R17) on a combination of roads for 1,000 average miles
I have had Coopers before, with great results. So far, these are exceeding my expectations. They are quiet on the road, and give me a feeling of confidence as I use them. Great price for the value you get.
Helpful 20 - tire reviewed on November 25, 2022
Given 93% while driving a Suzuki Jimny (225/70 R15) on a combination of roads for 0 easy going miles
Mounted these on my All New (2020) Jimny and it exceeded my expectations! Grip is excellent both in dry and wet conditions. Road noise is almost non existent (same if not better than the stock Dunlop Grantrek AT20) and there seems to be no negative impact on my fuel economy despite being wider and bigger (although I am a light footed driver). I get better handling on this especially when cornering primarily because it is much wider than the stock 195/80/r15 Dunlop's. I will surely buy these tires again in the future! I only clocked in about 2000 kms on this so it is still not showing any visible signs of wear.
Helpful 50 - tire reviewed on January 8, 2020
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Latest Cooper Discoverer AT3 4S Reviews

Given 10% while driving a Nissan Pathfinder (225/45 R17) on mostly town for 45,000 easy going miles
Had these fitted to my Nissan Pathfinder where my usage is 90% on road & 10% off. My on road is quite sedate as I stopped being a boy racer years ago. Nitrogen filled and rotated as per Coopers requirement every 8000kms to maintain their 100,000kms mileage guarantee. One of them shredded at 15,000kms having never been off road. After a bit of heated discussion with Cooper South Africa who were only going to contribute 85% of the cost, they eventually contributed the full 100%. I've just had to replace all four after only 45,0000kms as they were down to the tread wear bars. ~ not even HALF of the claimed mileage. The guarantee isn't worth the paper it's written on and quite were Cooper pluck this mileage figure from is beyond me. Would I buy them again? Certainly not. Can I recommend them? No.
Helpful 12 - tire reviewed on March 19, 2023
Given 74% while driving a Mercedes Benz X250 (225/45 R17) on a combination of roads for 10,000 average miles
I bought theese tires especially for snow after a long research. I was not disapointed as they behave like a winter tire bought in the snow and ice. I can't say much regarding wear as I only driven them 10k - there's hardly any wear visible by now. In the dry: it's an AT tire on a Merc X Class, they grip well on and off road. Road noise it's not bad, just not as good as a summer tire. Overall I am very satisfied with the performance in winter conditions, comparing with Goodyear Wrangler Duratrac.
Helpful 23 - tire reviewed on November 29, 2021
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Given 81% while driving a Ford Ranger (265/60 R18) on mostly country roads for 16,500 average miles
I had these fitted very soon after getting my truck as the original Continentals had very little traction on the rear wheels on wet roads and mud. The Coopers have been excellent tires. Handling isn't as good as with the original Continental tires, but that's expected as the Coopers are all terrain tires with a much more chunky tread. This doesn't bother me as I drive a truck, not a sports car! Performance on both dry and wet roads is excellent. Performance off road is also superb and they really do allow the truck to go anywhere. Tire wear is very good. I've done 16,000 miles on them and they've hardly worn at all.
Helpful 26 - tire reviewed on February 16, 2021
Given 88% while driving a Nissan Pathfinder (265/70 R15 T) on mostly motorways for 7,200 spirited miles
I bought these on promotion for about 1/3 less than they go for now.
A handsome tire with good grip in all conditions. Unphased by heavy rain on the highway. Particularly amazing grip in deep snow in 4H or 4L. With 8" snow I was comfortably smashing up steep hills, stopping controlled and quickly, and VERY predictably 4 wheel drifting in the snow. Very good at expelling mud or snow from getting packed in the tread. Noise from tire is hardly noticeable compared to other tires in the category. Capable on and off road with an amazing 65,000 mile warranty.

MPG noticably decreased; my average mpg fell from ~18.5 to ~17 mpg in the past year. The tires squeal on concrete roads in wet conditions before they have warmed up. Pebbles stay wedged in between the tread and make clicking noises until the noise stops on the highway and some poor sod behind you got a rock chip. Tire feedback feels numb, but that blame can be shared with my 20 yr old suspension on a 4500# Nissan dinosaur. Also, the price skyrocketed after the positive reviews rolled in.

TL;DR These are class leading tires that punch above their, and their manufacturer's weight. Cooper marketing was spot on for the SUV driver that mostly keeps to the highway, but needs uncompromising off-road performance when duty calls. At the current $156/ea USD price online, I'd shop around or wait for a rebate. When first released I got the price down to ~$100/ea USD with a rebate.
Helpful 23 - tire reviewed on November 22, 2019