Tests – · none yet Owners 68 · 11 reviews
Head-to-head
Updated
Toyo Open Country A/T plus vs Cooper Discoverer A/T3 Sport — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 11 + 4 owner reviews. How we score
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Tests – · none yet Owners – · 4 reviews (needs 5)
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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70
Dry
No comparison–Why this score
Source Open Country A/T plus Discoverer A/T3 Sport Professional tests (TWG score) ≈ 69 (est.) – Reviews found online 71 – Open Country A/T plus: 60% × 69.1 (est.) + 40% × 70.5 = 70
No road tests of dry for Open Country A/T plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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70
Wet
No comparison–Why this score
Source Open Country A/T plus Discoverer A/T3 Sport Professional tests (TWG score) ≈ 70 (est.) – Reviews found online 70 – Open Country A/T plus: 60% × 70.3 (est.) + 40% × 69.9 = 70
No road tests of wet for Open Country A/T plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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68
Comfort
No comparison–Why this score
Source Open Country A/T plus Discoverer A/T3 Sport Professional tests (TWG score) ≈ 69 (est.) – Reviews found online 67 – Open Country A/T plus: 40% × 68.7 (est.) + 60% × 66.9 = 68
No road tests of comfort for Open Country A/T plus. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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64
Treadwear
No comparison–Why this score
Source Open Country A/T plus Discoverer A/T3 Sport Professional tests (TWG score) ≈ 65 (est.) – Reviews found online 62 – Open Country A/T plus: 60% × 64.6 (est.) + 40% × 61.9 = 64
No road tests of treadwear for Open Country A/T plus. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
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71
Handling (owners)
No comparison–Why this score
Source Open Country A/T plus Discoverer A/T3 Sport Reviews found online 71 –
Scores at a glance
| Category | Toyo Open Country A/T plus | Cooper Discoverer A/T3 Sport |
|---|---|---|
| Relative Score | 69 | – |
| Dry | 70 | – |
| Wet | 70 | – |
| Comfort | 68 | – |
| Treadwear | 64 | – |
| Handling (owners) | 71 | – |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
69
/ 100
Open Country A/T plus
–
/ 100
Discoverer A/T3 Sport
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 plus
Pros
- Exceptionally low road noise for an all-terrain tire
- Strong traction in off-road conditions such as mud, grass, gravel, and snow
- Good overall value and pricing relative to premium brands
Cons
- Some reports of faster-than-desired tread wear or soft rubber compound
- Occasional complaints about reduced grip or a spongy feel on wet tarmac
- Not optimized for extreme deep snow or heavy-duty mud terrain applications
Tire B Discoverer A/T3 Sport
Pros
- Exceptional ride comfort on long trips and asphalt
- Very low fuel consumption compared to other tires
- Strong dry grip and above-average on-road performance
Cons
- Snow performance decreases significantly after the first year
- Slight oversteer tendencies on wet roundabouts
- Slipping tendencies in wet mud conditions
Specs side by side
| Attribute | A · Toyo Open Country A/T plus | B · Cooper Discoverer A/T3 Sport |
|---|---|---|
| Category | All-Terrain tire | All Terrain and Off Road All Season tire |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 54 | — |
| Rim diameters | 15″ – 21″ | — |
Which one should you actually buy?
69
/ 100
Toyo Open Country A/T plus
–
/ 100
Cooper Discoverer A/T3 Sport
Only Toyo Open Country A/T plus 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 plus
Tire B · Cooper Discoverer A/T3 Sport
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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.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology