Relative Score (0–100): 60% professional tests, 40% owner reviews.
Too close to call: Discoverer AT3 XLT and Discoverer AT3 4S are level at 76.
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Tests – · none yet Owners 80 · 800 reviews
“Cooper Discoverer AT3 XLT Picked up a set of Discoverer AT3 XLT from simple tire. With the 4th of July discounts all 4 were under 1k before taxes. I had the AT3 4S on a previous ram and they held up so I’m expecting good things here.”
Tests – · 1 test Owners 81 · 688 reviews
“New shoes today! Cooper Discoverer AT3 4S - 275/65/18”
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 84 | 84 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 84 | 86 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 70 | 73 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 80 | 83 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 80 | 81 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Professional tests (TWG score) | – | 71 |
| Reviews found online | 77 | 77 |
| Source | Discoverer AT3 XLT | Discoverer AT3 4S |
|---|---|---|
| Reviews found online | 78 | 77 |
| Category | Cooper Discoverer AT3 XLT | Cooper Discoverer AT3 4S |
|---|---|---|
| Relative Score | 76 | 76 |
| Dry | 78 | 78 |
| Wet | 80 | 82 |
| Snow | 70 | 72 |
| Comfort | 74 | 76 |
| Noise | 72 | 72 |
| Treadwear | 72 | 73 |
| Handling | 78 | 77 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Discoverer AT3 XLT
Discoverer AT3 4S
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
From Reddit, forums and review threads. Not part of our score
Community opinion of the Cooper Discoverer AT3 XLT is overwhelmingly positive, with users frequently praising its smooth ride quality, exceptional quietness on the highway, and long-term durability compared to competitors like BFG KO2 and Toyo Open Country. Drivers also appreciate its solid value and performance when towing. A few users occasionally confuse the M+S marking with the Three-Peak Mountain Snowflake rating for severe winter conditions.
“Put some new tires on the XD today. Cooper Discoverer AT3 XLT in 275/70R18. I usually run BFG KO2s on my trucks but wanted to try something different this time.”
“I’ve run Hankook dynapro’s, BFG ko2, Nokian outpost nat, and fallen wild peaks. Currently running Cooper discoverer AT3 XLT - they are definitely the quietest all terrains I’ve had. I would recommend them if they are available in your size - many places like simpletire or priority tire carry them.”
“New shoes this week, Cooper Discoverer At3 XLT. I’m really impressed so far.”
Based on 8 community posts
The Cooper Discoverer AT3 4S is widely praised by the community for its quiet and comfortable highway ride, excellent wet and snow traction, and solid fuel efficiency. Drivers appreciate its balance of rugged aesthetics and daily drivability, though recent discussions highlight growing concerns over reported product discontinuations and sizing shortages.
“02 SR5 - New Cooper Discoverer AT3 4S P235/75R15 - beautiful tire - excellent handling/feel”
“Tire Question: Michelin Defenders or Cooper Discoverer AT3 4S I have a TRD ORP and want to replace the crappy stock Dunlops. Almost all my driving is on road so looking at the Michelin Defenders or the Cooper AT3 4S in the stock size. I prefer the looks of the coopers but am I going to notice any decrease in wet performance, road noise or mpg compared to the Michelins?”
“Tire Recs for F150 - mostly highway and some muddy field edges - Cooper or Falken? I mostly put highway miles on my 2011 F150 but Im a bow hunter so October and November I spend a decent amount of time driving on field edges to get to hinting spots. When its wet, these field edges get pretty sloppy. I have Cooper Discoverer AT3 4S currently. While Ive never gotten stuck, there's been a few sweaty moments where it felt close. These have been great on road tires with low road noise, great fuel efficiency, and impressive handling in wet, dry, and snow. I want to maintain on road performance as thats 90% of my use, but curious if there are any thoughts on the new Cooper Discoverer Road + Trail AT, vs Falken Rubitrek, or Falken Wildpeak AT3 or AT4. Im leaning going Coopers again and hoping for the best on those occasional muddy mornings. Let me know thoughts and experiences. Read more”
Based on 15 community posts
| Attribute | A · Cooper Discoverer AT3 XLT | B · Cooper Discoverer AT3 4S |
|---|---|---|
| Category | Premium Touring All Season tire | All Season |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 4 | 14 |
| Rim diameters | 16″ – 20″ | 15″ – 22″ |
| Tread depth | 16 - 18/32″ | 12 - 14/32″ |
| UTQG | — | 620 A B |
| Treadwear warranty | 60,000 mi | 65,000 mi |
| Sidewall | Black Side Wall - Raised White Lettering | Black Side Wall - Raised Outline White Lettering |
| Max pressure | 35 - 80 psi | 44 - 50 psi |
Cooper Discoverer AT3 XLT
Cooper Discoverer AT3 4S
Too close to call: Cooper Discoverer AT3 XLT and Cooper Discoverer AT3 4S are within 2 points overall.
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Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Community buzz from Reddit and forums is shown for context only — it never changes the score.
