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Cooper Discoverer A/T3

The Cooper Discoverer AT3 is a All Terrain and Off Road All Season tyre designed to be fitted to SUV and 4x4s.

7.2
Tyre Reviews Score Based on User Reviews
Limited Confidence View Breakdown
Dry Grip
87%
Wet Grip
79%
Road Feedback
77%
Handling
74%
Wear
68%
Comfort
78%
Buy again
63%
Snow Grip
76%
Ice Grip
58%
20 Reviews
73% Average
381,995 miles driven
Cooper Discoverer AT3

Cooper Discoverer AT3

All Season Mid-Range
BETA
7.2 / 10
Based on User Reviews · Limited Confidence · Updated 23 Feb 2026

The Tyre Reviews Score is the most comprehensive tyre scoring system available. It aggregates professional test data from multiple independent publications, user reviews, and consistency analysis using Bayesian statistical methods, weighted normalisation, and recency-adjusted scoring to produce a single, reliable performance rating.

Learn more about our methodology
Score Components
Professional Tests
Weight: 80%
Tests: 0
Publications: 0
User Reviews
Weight: 15%
Reviews: 20
Avg Rating: 73.4%
Min Required: 5
Consistency
Weight: 5%
Score Std Dev: 2.87
History Points: 10
Methodology & Configuration
Scoring Process
  1. Collect Test Data: Gather results from professional tyre tests across multiple publications. Minimum 1 test(s) required.
  2. Normalize Positions: Convert test positions to percentile scores using exponential weighting (factor: 1.2).
  3. Apply Recency Weighting: More recent tests are weighted higher with a decay rate of 0.95.
  4. Incorporate User Reviews: Factor in user review data (minimum 5 reviews). Weight: 15%.
  5. Bayesian Smoothing: Apply Bayesian prior (score: 7, weight: 1.5) to prevent extreme scores with limited data.
  6. Calculate Final Score: Combine all components using normalization factor of 1.1. Max score with limited data: 9.5.
Component Weights
Test Data
80%
User Reviews
15%
Consistency
5%
All Configuration Parameters
ParameterValueDescription
safety_weight 0.7 Weight multiplier for safety-related metrics
performance_weight 0.55 Weight multiplier for performance metrics
comfort_weight 0.4 Weight multiplier for comfort metrics
value_weight 0.45 Weight multiplier for value-for-money metrics
user_reviews_weight 0.15 How much user reviews contribute to the final score
test_data_weight 0.8 How much professional test data contributes to the final score
consistency_weight 0.05 How much score consistency contributes to the final score
recency_decay_rate 0.95 Rate at which older test results lose influence (higher = slower decay)
min_test_count 1 Minimum number of professional tests required
min_review_count 5 Minimum number of user reviews required
score_version 1.9 Current version of the scoring algorithm
score_normalization_factor 1.1 Factor used to normalize raw scores to the 0-10 scale
confidence_factor_weight 0.2 How much data confidence affects the final score
position_penalty_weight 0.2 Penalty applied for poor test positions
gap_penalty_threshold 12 Score gap (%) that triggers additional penalties
min_metrics_count 2 Minimum number of test metrics needed per test
limited_data_threshold 2 Number of tests below which data is considered limited
single_test_penalty 0.75 Score multiplier when only one test is available
critical_metric_penalty 0.7 Penalty for poor performance on critical safety metrics
critical_metric_threshold 70 Score below which a critical metric penalty applies
position_exponential_factor 1.2 Exponent used to amplify position-based scoring
position_exponential_threshold 0.9 Position percentile below which exponential scoring applies
gap_multiplier_critical 3 Multiplier for critical gap penalties
max_category_weight 2 Maximum weight any single category can have
max_score_limited_data 9.5 Score cap when data is limited
bayesian_prior_weight 1.5 Weight of the Bayesian prior in smoothing
bayesian_prior_score 7 Prior score used for Bayesian smoothing
evidence_test_multiplier 1.9 Multiplier for test evidence in confidence calculation
evidence_metric_divisor 3 Divisor for metric count in evidence calculation
evidence_review_divisor 10 Divisor for review count in evidence calculation
combined_penalty_floor 0.2
All Tests

Sorry, we don't currently have any magazine tyre tests for the Cooper Discoverer AT3

Questions and Answers for the Cooper Discoverer AT3

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June 22, 2022

Does cooper discovery at3 make a tire for my Chevy 3500 dually truck; size LT 225/75/R17 thanks

Yes the Cooper Discoverer AT3 is available in 225/75 R17
October 4, 2023

How thick is the side wall of a Cooper Discoverer AT3 tyre please?

The sidewall thickness of a Cooper Discoverer AT3 tyre can vary depending on the specific model and size. Usually, this information can be found in the technical specifications provided by the manufacturer. It should be somewhere between 2 to 4 mm and will be designed with some offroad protection in mind.
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Top 3 Cooper Discoverer AT3 Reviews

Given 89% while driving a Toyota hilux (225/75 R16) on track for 40,000 spirited miles
Used on a Hilux with air lockers and heavy loads. Mine are the LT light truck construction. Constantly being aired down to suit rocky and muddy conditions. Recently completed a 15,000 km road trip around New Zealand S Island doing as many of the high country 4WD tracks as possible. As usual we got some snotty comments from the guys with big MTs but there was nowhere we couldn’t go. We completed some proper hardcore tracks needing low range first and second gear fully locked for long stretches to get up (and down). Tyres at ~15-20psi. Truck (which is heavy) handled the long distance tarmac drives no problem at relatively high pressures - 45 front, 60 rear. Long distance gravel roads down south I tend to air down to 30s. Extremely happy with the performance of this tire which is an all round excellent performer. It might not look particularly flash like a lot of these chunky off-road tires but it is very tough. The only time it struggles which is quite funny is in a flat muddy paddock full of cow pats. If the tires get clogged up with mud & poop they can be useless on flat wet grass. Which can be embarrassing…
July 20, 2025
Given 57% while driving a Dodge Ram 2500 (315/70 R18) on mostly town for 24,500 easy going miles
Purchase because of the 60k treadwear warranty.
Tires were TOAST after 24,500 miles and I am a passive driver.
Dealer said I would likely get NOTHING out of Cooper. After pressure, he sent in the treadwear and rotation information but the only way they would even consider it was if I SENT IN THE TIRES. How do you send in the tires??? What do I drive while they are deliberating? Only option was to by a (too expensive) set of tires to drive while Cooper decides my fate.
VERY DISAPPOINTED to say the least. Never again.
June 6, 2025
Given 80% while driving a Kia Motors Sorento 2.5 XE Manual (245/70 R16) on a combination of roads for 7,000 easy going miles
I’ve had these Cooper AT3 installed for 6 months now. My initial thoughts and experiences are that these are a great set of tyres.
I drive a Kia Sorento with part time 4wd and I do 50/50 road and off road. Dry and mud. I can only say off road these tyres haven’t let me down. I’ve driven across Wales in dry and wet conditions and I’ve been very happy with this purchase. They bite well into the mud and get you out of trouble in 4wd. On the road at motorway speeds you can’t really tell they are A/T tyres. Only a barely audible humming from the aggressive tread pattern, but you’d really have to pay attention to hear the difference between these and road tyres. The only thing I noticed was the slightly softer road feedback through the steering wheel. Even at 35psi the feel of the road is quite soft, but is this because they are A/T tyres and not tarmac racing tyres? However, this does not affect handling or confidence as they grip the road very well in wet and dry. The soft feel also provides a very comfortable drive on the road.
Yes I will be buying these again when they are approaching 4mm.
November 19, 2024

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Latest Cooper Discoverer AT3 Reviews

Given 93% while driving a Land Rover Defender (235/85 R16) on mostly country roads for 12,000 easy going miles
I have has these on a Defender 110 TDCI for twelve months now, driving a mixture of country roads, motorways, field edges (shooting & fishing), plus snow in the alps (skiing). I've also done about 800 miles of towing a two ton sailing boat.
All in all that's a 12,000 varied workout, and I've nothing but praise for these Discoverer AT3 LT tyres. A compliant, quiet ride with decent a steering feel. I've been buying and using all terrain tyres for some 20 years now and these are my favourites. .
November 2, 2023
Given 93% while driving a Jeep Grand Cherokee (225/45 R17) on mostly town for 140 easy going miles
Got my Grand Cherokee in August 2012. V6 but engine size does not match any of the options listed below. Vehicle came fitted with Kumhos which I had never heard of. ( I am not a petrol head). They lasted about 2 years and 40 000 km at which point I had tread separation on two tyres. Fitted 2 Cooper Discoverers AT3/60R18 in Sept 2014 and went all Coopers in Jan 2017 at 98 000km. Cannot comment on wet versus dry grip - never done any snow nor ice driving and my typical driving style on the open road is under cruise control at 100 - 110 kph. My local Jeep agents tell me the tyres are noisy - take their word for it - I have no trouble. I am about to replace my front tyres, which started at the back, having done 140 000 km in 6 and a half years The present rear tyres have done 65 000 km in 3 and half years. My main off road driving is on beach sand as part of our work - very occasionally on rocky dirt. I am not sure whether the above figures are average but have seen quite a mix of reviews. Please note we work in kilometres.
July 9, 2023
Given 71% while driving a Nissan Pathfinder (265/75 R16) on mostly town for 37,000 average miles
Ive had these on my 2005 pathfinder 3 years and about 37K miles. They look good, have good traction, and handle well both on and off road. The only negative is that they are really starting to wear even though I rebalance and rotate them every 5000-6000 miles. I don't think I'll get to 50K on them. Based on the wear I probably won't go back to these in the future.
May 9, 2023
Given 78% while driving a Renault Trafic (225/70 R16) on mostly country roads for 6,000 average miles
I was recommended these by my local tyre specialist for my 2009 Renault trafic sport. They have been fantastic, having the right tyres makes a difference in the snow and ice, genuinely shocked how good they were for the money! Will be buying again
January 21, 2023
Mitsubishi (265/70 R18) on a combination of roads for 11 average miles
11,000 miles on these tyres and they have hardly worn at all so far. Very little noise from them when driving on the road and just enough tread on them for a little off road fun. I will buy again and I would highly recommend these tyres.
April 9, 2022
Given 43% while driving a Toyota Hilux 4x4 3.0D4 D legend 45, D/C (265/65 R17) on a combination of roads for 25,000 easy going miles
This being my first set of Cooper Tyres, i was really interrested in them due to the claimed mileage and also being really solid and tough. after the first 15000km i found that the rubber started delaminating and one tyre became unable to balance. The quality is in fact very very poor. The dry grip is exceptional, handling on loose dirt and gravel is brilliant. i think that the mileage is very good so far, but i have decided to remove them and get some thing else. I have lost trust in them and just dont feel like a high speed issue. As they haver aged i also feel that they take control of the vehicle in quiet an aggressive manner it feels like i have to wrestle the steering when driving on tar that is un-even, previous branded tyres i did not have that issue.I would never buy these tyres again.
March 17, 2022
Given 67% while driving a Mitsubishi Pajero 4x4 wagon (235/75 R15) on a combination of roads for 72,222 easy going miles
When bought I saw no rim protecting was there, but many haven't. As long as quite new, all OK. Good grip on rocks, trails, mud and snow. When some 4mm left, you start to feel the road's inclinations, etc. When they are at the advised tyre pressure, they still look and feel like far too soft. Now 117,000 kms done and that's great. Two of the four need replacement. Only if they are competitive in price I would buy them again.
August 30, 2017
Given 84% while driving a (265/65 R18 T) on for 0 miles
I see all of this feedback relating to the tires in SoAfrica, but I live here in the US - New England. These tires rock in the winter. We had 9+ feet (3 meters) of snow in one month that I ran these tires, and I didn''t need to shovel in to my pickup to my home. Only tire I've had that was better here was Armstrong's Tru Trac. Unfortunately, Perelli bought them and discontinued the beast.
May 20, 2016
Given 80% while driving a Toyota Landcruiser (265/60 R16) on mostly country roads for 15 average miles
Have the Coopers on my Land Cruiser 70 Series RKR, they work better than any other tyre I have tried.Excellent off road performance in the most adverse conditions in Pakistan deserts and mountains. 20,000 KM and going strong.
April 24, 2016
Given 80% while driving a Mitsubishi Pajero 4x4 wagon (265/70 R16) on mostly motorways for 20,000 average miles
Bought set of 4 for my Pajero and done 20k km with them. They great for normal high way driving.
Totally disappointed in their strength, durability and build quality, picked up 2 tiny pin hole leaks on the side wall, south African bush is tough.

The final straw came when on the freeway and I picked up a slow puncture, didn't hit any object. Took tyre off and found a large tear on the inside of the tyre. Now Cooper tire is saying its a wrong application. Really why pay premium price and when you do 10% offroad you EXPECT tyres to perform. I've also been told from reliable source that the AT3 is not suitable for AFRICA (South African) condition and that the AT3 LT is the tyre they should have been selling in out Market (subsequently now being offered in SA)
January 7, 2016
Given 65% while driving a Land Rover Discovery 2 (265/70 R16) on a combination of roads for 38,000 average miles
I'd bought these tires as I got them at a great price $585 fitted!! I used for a combination of mostly on road with average amount off off road ing. Off road included the desert which it managed pretty well once aired down as well as handled gravel trails and inclines with ease but lost grip climbing rocky trails/ hills. These were great and u used them for 38K miles but the law in UAE dictates that tires can be used no longer than 3 years from the date of production. They do have a bit of tread however wouldnt purchase it again as I'd want something a bit more aggressive, perhaps the Cooper STT.
July 13, 2015
Given 56% while driving a Isuzu KB 280 DT 4x4 (225/45 R17) on mostly country roads for 20,000 average miles
I had to replace 4 of those tyres due to unrepearable punctures on gravel roads before i could get 20 000km. Kak tyre. Will not buy it again.
August 8, 2014
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