Tests – · none yet Owners 58 · 2 reviews
Head-to-head
Updated
Toyo Open Country A/T II vs Cooper Discoverer A/T3 — Compared
Relative Score (0–100): 60% professional tests, 40% owner reviews.
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Tests – · none yet Owners 67 · 973 reviews
“Been running them on the wifes truck for 3 or 4 years now. They are a good tire, very little noise on pavement, does fine on snow. Cooper Discoverer A/T3 Review”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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Dry
No comparison71Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 73 -
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Wet
No comparison73Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 75 -
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Snow
No comparison68Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 66 -
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Comfort
No comparison69Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 68 -
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Noise
No comparison66Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 65 -
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Treadwear
No comparison59Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 54 -
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Handling
No comparison65Why this score
Source Open Country A/T II Discoverer A/T3 Reviews found online – 65
Scores at a glance
| Category | Toyo Open Country A/T II | Cooper Discoverer A/T3 |
|---|---|---|
| Relative Score | – | 67 |
| Dry | – | 71 |
| Wet | – | 73 |
| Snow | – | 68 |
| Comfort | – | 69 |
| Noise | – | 66 |
| Treadwear | – | 59 |
| Handling | – | 65 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
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Neutral
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Less important
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Important
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Neutral
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Recomputed
Headline score
–
/ 100
Open Country A/T II
67
/ 100
Discoverer A/T3
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Open Country A/T II
Not enough owner reviews yet to extract themes.
Tire B Discoverer A/T3
Pros
- Exceptionally quiet and smooth highway ride for an all-terrain tire
- Great traction and handling on dry and wet pavement
- Strong value and competitive pricing compared to major brand competitors
Cons
- Some users experienced balancing issues and persistent road vibrations
- Faster-than-expected tread wear or premature wear reported by a subset of drivers
- Subpar performance on ice and hard-packed snow for certain vehicle applications
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Toyo Open Country A/T II
We haven't collected enough community discussion about this tire yet.
Tire B
Positive
Cooper Discoverer A/T3
Community sentiment for the Cooper Discoverer A/T3 is overwhelmingly positive, with users frequently praising its low road noise, smooth ride, and strong snow and wet traction. Owners appreciate its long tread life, solid towing capability, and reasonable value, though some note it packs up quickly in thick mud and can become slightly louder as it wears.
f150forum.com
“Put a set on a day after I purchased my truck. Have about 8500 miles on them and no complaints whatsoever. Been on a 3000 trip with them not towing and a 2400 mile trip towing a 8K travel trailer. No problems on either trip. I'll get another set when these wear out, hopefully many miles down the road. No sign of wear yet!”
bobistheoilguy.com
·2012-08-28
“I have put 18k miles on the discoverer AT/3's on my F150 since last November and have been impressed with them so far. The tread seems to be wearing well, and I haven't noticed any more road noise than the BF Goodrich rugged trail T/As that I had on it before, and the ride quality has also been good compared to other tires. I haven't used them off road much but they did well in snow last winter, and have got good traction on wet pavement. Overall, I'd definitely say their good tires for the money, with their performance and the fact that they come with a 55,000 mile warranty.”
forum.ih8mud.com
·2018-07-29
“Just a minor point... The tire in the picture is actually the Cooper Discoverer AT3 LT, not a Discoverer A/T3. They're different models, and Cooper does a really poor job IMO differentiating between them. I had Cooper Discoverer A/T3's E range on my 2nd Gen Tundra and LOVED them. That truck is gone, and now my Taco has Disco A/T3's and I'm finding them every bit as transformative.”
Top themes
#low road noise#snow and wet traction#treadwear and longevity#ride comfort and quality#mud performance limitations#towing and hauling capability#value and pricing
Based on 24 community posts
Specs side by side
| Attribute | A · Toyo Open Country A/T II | B · Cooper Discoverer A/T3 |
|---|---|---|
| Category | — | All Season |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | — | 14 |
| Rim diameters | — | 15″ – 22″ |
| Tread depth | 13 - 17/32″ | 14 - 17/32″ |
| UTQG | 600 A B | 560 A B |
| Sidewall | Black Side Wall - Raised Outline White Lettering | Black Side Wall - Raised Outline White Lettering |
| Max pressure | 44 - 80 psi | 44 - 80 psi |
Which one should you actually buy?
–
/ 100
Toyo Open Country A/T II
67
/ 100
Cooper Discoverer A/T3
Only Cooper Discoverer A/T3 has enough test and review data for a Relative Score, so there is no head-to-head winner yet.
Tire A · Toyo Open Country A/T II
Tire B · Cooper Discoverer A/T3
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How do we compare tires?
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.