88
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
88/100
60 owner reviews
Prices change daily — check the retailer for your size.
Head-to-head
Updated May 2026
Cooper Discoverer A/T3 vs Toyo Open Country All Terrain — Compared (May 2026)
Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.
VS
87
/ 100
Objective (60%)
–/100
No test data yet
User signal (40%)
88/100
114 owner reviews
Prices change daily — check the retailer for your size.
VerdictToo close to call: Cooper Discoverer A/T3 and Toyo Open Country All Terrain are within 2 points overall. Cooper Discoverer A/T3 is stronger on snow and noise. Toyo Open Country All Terrain is stronger on handling.
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Category breakdown
7 categories, side by side
Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.
Dry
Score (0–100)
Discoverer A/T3 leads by 1
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 87 | 81 |
| America's Tire owners | 96 | – |
Wet
Score (0–100)
Discoverer A/T3 leads by 2
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 79 | 76 |
| America's Tire owners | 92 | – |
Snow
Score (0–100)
Discoverer A/T3 leads by 13
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 76 | 65 |
Comfort
Score (0–100)
Discoverer A/T3 leads by 2
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 78 | 79 |
| America's Tire owners | 90 | – |
Noise
Score (0–100)
Discoverer A/T3 leads by 5
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| America's Tire owners | 87 | – |
Treadwear
Score (0–100)
Open Country All Terrain leads by 1
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 68 | 81 |
| America's Tire owners | 82 | – |
Handling
Score (0–100)
Open Country All Terrain leads by 16
Why this score
| Source | Discoverer A/T3 | Open Country All Terrain |
|---|---|---|
| Tyre Reviews owners | 74 | 74 |
| America's Tire owners | 91 | – |
Scores at a glance
| Category | Cooper Discoverer A/T3 | Toyo Open Country All Terrain |
|---|---|---|
| Relative Score | 88 | 87 |
| Dry | 95 | 94 |
| Wet | 91 | 89 |
| Snow | 86 | 73 |
| Comfort | 91 | 89 |
| Noise | 94 | 89 |
| Treadwear | 86 | 87 |
| Handling | 74 | 90 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
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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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Recomputed
Headline score
88
/ 100
Tire A
87
/ 100
Tire B
From owners
Pros, cons & observations
Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.
Not enough owner reviews yet to extract themes.
The Toyo Open Country series is widely regarded as a premium, high-performance option for truck and SUV owners seeking a balance between rugged off-road capability and daily-driver refinement. While users consistently praise their impressive longevity, snow traction, and surprisingly quiet road manners for their aggressive tread patterns, some owners report concerns regarding wet-weather handling and high price points.
Pros
- Exceptional tread life and durability, with many users reporting high mileage.
- Surprisingly low road noise and smooth ride quality for an aggressive tire.
- Strong off-road performance in mud, gravel, and deep snow.
- Reliable and predictable handling on dry pavement.
Cons
- High retail price compared to competitors.
- Inconsistent wet-weather traction reported by some users.
- Potential for balancing issues or vibrations at highway speeds.
- Sidewall durability concerns in specific off-road environments.
Observations
- Heavy-duty truck owners (e.g., F350) occasionally reported concerns regarding sidewall stability and sway when towing heavy loads.
- Users with Jeep and light truck platforms frequently highlight the tire's ability to maintain comfort during daily commuting while remaining capable on trails.
- Diesel truck owners consistently report high satisfaction with tread wear longevity despite the increased torque and weight of their vehicles.
Specifications
Specs side by side
| Attribute | A · Cooper Discoverer A/T3 | B · Toyo Open Country All Terrain |
|---|---|---|
| Category | All Season All Terrain and Off Road tires | All Season All Terrain and Off Road tires |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Tread depth | 14 - 17/32″ | — |
| UTQG | 560 A B | — |
| Sidewall | Black Side Wall - Raised Outline White Lettering | — |
| Max pressure | 44 - 80 psi | — |
Final verdict
Which one should you actually buy?
88
/ 100
Cooper
87
/ 100
Toyo
Too close to call: Cooper Discoverer A/T3 and Toyo Open Country All Terrain are within 2 points overall. Cooper Discoverer A/T3 is stronger on snow and noise. Toyo Open Country All Terrain is stronger on handling.
Pick tire B
You enjoy sharp, responsive handling
Toyo Open Country All Terrain scores 90 vs 74 on handling.
Pick tire A
You drive through snowy winters
Cooper Discoverer A/T3 scores 86 vs 73 on snow.
Pick tire A
You want a quieter cabin
Cooper Discoverer A/T3 scores 94 vs 89 on noise.
Tire A · Cooper Discoverer A/T3
Tire B · Toyo Open Country All Terrain
More comparisons
Also compared with
Cooper Discoverer A/T3 also compared with
Toyo Open Country All Terrain also compared with
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.
Community buzz from Reddit and forums is shown for context only — it never changes the score.