Relative Score (0–100): 60% professional tests, 40% owner reviews.
Discoverer AT3 XLT is ahead, 76–63
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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 – · none yet Owners 60 · 21 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 84 | 62 |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 84 | 59 |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 70 | 62 |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 80 | 55 |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 80 | – |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 77 | 62 |
| Source | Discoverer AT3 XLT | All-Terrain T/A KO |
|---|---|---|
| Reviews found online | 78 | 57 |
| Category | Cooper Discoverer AT3 XLT | BFGoodrich All-Terrain T/A KO |
|---|---|---|
| Relative Score | 76 | 63 |
| Dry | 78 | 64 |
| Wet | 80 | 62 |
| Snow | 70 | 65 |
| Comfort | 74 | 62 |
| Noise | 72 | – |
| Treadwear | 72 | 64 |
| Handling | 78 | 57 |
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.
Neither tire has a score here yet, so this weight changes nothing.
Discoverer AT3 XLT
All-Terrain T/A KO
Only categories both tires have data for count toward the headline score.
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
We haven't collected enough community discussion about this tire yet.
| Attribute | A · Cooper Discoverer AT3 XLT | B · BFGoodrich All-Terrain T/A KO |
|---|---|---|
| Category | Premium Touring All Season tire | All Terrain and Off Road All Season tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 4 | — |
| Rim diameters | 16″ – 20″ | — |
| Tread depth | 16 - 18/32″ | — |
| Treadwear warranty | 60,000 mi | — |
| Sidewall | Black Side Wall - Raised White Lettering | — |
| Max pressure | 35 - 80 psi | — |
Cooper Discoverer AT3 XLT
BFGoodrich All-Terrain T/A KO
Winner: Cooper Discoverer AT3 XLT — better handling, wet and dry. It leads or ties in every category we score.
Cooper Discoverer AT3 XLT scores 78 vs 57 on handling.
Cooper Discoverer AT3 XLT scores 80 vs 62 on wet.
Cooper Discoverer AT3 XLT scores 78 vs 64 on dry.
Cooper Discoverer AT3 XLT scores 74 vs 62 on comfort.
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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.
