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Head-to-head Updated May 2026

Cooper Discoverer A/T3 vs Toyo Open Country A/T II — 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.

Tire A Cooper

Cooper Discoverer A/T3

All Season All Terrain and Off Road tires

Cooper Discoverer A/T3 tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
88/100
60 owner reviews
Dry
95
Wet
91
Snow
86
Comfort
91
Noise
94
Treadwear
86
Handling
74
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Prices change daily — check the retailer for your size.

VS
Tire B Toyo

Toyo Open Country A/T II

Toyo Open Country A/T II tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
92/100
816 owner reviews
Dry
96
Wet
91
Snow
91
Comfort
93
Noise
89
Treadwear
92
Handling
93
Check price on Amazon

Prices change daily — check the retailer for your size.

VerdictWinner: Toyo Open Country A/T II — better handling, treadwear and snow. Pick the Cooper Discoverer A/T3 if noise matters most to you.
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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

Weight: Neutral
Score (0–100) Open Country A/T II leads by 1
A
95
B
96
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 87 65
America's Tire owners 96 –

Wet

Weight: Important
Score (0–100)
A
91
B
91
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 79 50
America's Tire owners 92 –

Snow

Weight: Neutral
Score (0–100) Open Country A/T II leads by 5
A
86
B
91
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 76 45

Comfort

Weight: Neutral
Score (0–100) Open Country A/T II leads by 2
A
91
B
93
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 78 80
America's Tire owners 90 –

Noise

Weight: Neutral
Score (0–100) Discoverer A/T3 leads by 5
A
94
B
89
Why this score
SourceDiscoverer A/T3Open Country A/T II
America's Tire owners 87 –

Treadwear

Weight: Important
Score (0–100) Open Country A/T II leads by 6
A
86
B
92
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 68 75
America's Tire owners 82 –

Handling

Weight: Neutral
Score (0–100) Open Country A/T II leads by 19
A
74
B
93
Why this score
SourceDiscoverer A/T3Open Country A/T II
Tyre Reviews owners 74 60
America's Tire owners 91 –

Scores at a glance

CategoryCooper Discoverer A/T3Toyo Open Country A/T II
Relative Score 88 92
Dry 95 96
Wet 91 91
Snow 86 91
Comfort 91 93
Noise 94 89
Treadwear 86 92
Handling 74 93

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

Tire A

Tire B

From owners

Pros, cons & observations

Themes extracted from owner reviews across retailers and review sites — not the opinion of TireWheelGuide.

Tire A Cooper Discoverer A/T3

Not enough owner reviews yet to extract themes.

Tire B Toyo Open Country A/T II

The Toyo Open Country A/T II is widely regarded as a versatile, durable, and quiet all-terrain tire that excels in mixed-use scenarios, including towing and light-to-moderate off-roading. While the vast majority of users praise its longevity and highway comfort, a subset of owners reports persistent issues with high-speed balancing and inconsistent performance on slick, wet pavement.

Pros

  • Excellent highway comfort and low road noise for an all-terrain tire
  • Strong off-road capability in mud, sand, and loose rock
  • High durability and tread life when properly maintained
  • Predictable handling and stability while towing heavy loads

Cons

  • Persistent reports of vibration and difficulty achieving a proper high-speed balance
  • Inconsistent traction on wet or freshly rained-on pavement
  • Potential for uneven tread wear if rotation and pressure are not strictly managed
  • Some users find the compound too stiff for optimal grip in icy or packed snow conditions

Observations

  • Heavy-duty truck owners (e.g., Ram 2500/3500) report excellent towing stability, provided tire pressures are adjusted using the 'chalk test' to prevent center-tread wear.
  • Users opting for 'C' load ratings on lighter vehicles like the Jeep Wrangler report a more comfortable ride but note 'squishy' sidewalls during off-road deflation compared to 'E' load versions.
  • Owners of smaller SUVs and crossovers (e.g., Subaru Crosstrek) generally find the tire to be a significant aesthetic and functional upgrade over stock tires with minimal noise penalty.
Specifications

Specs side by side

Attribute A · Cooper Discoverer A/T3 B · Toyo Open Country A/T II
CategoryAll Season All Terrain and Off Road tires—
Vehicle typeSUV and 4x4—
Tread depth14 - 17/32″—
UTQG560 A B—
SidewallBlack Side Wall - Raised Outline White Lettering—
Max pressure44 - 80 psi—
Final verdict

Which one should you actually buy?

Cooper

Toyo

Winner: Toyo Open Country A/T II — better handling, treadwear and snow. Pick the Cooper Discoverer A/T3 if noise matters most to you.

Pick tire B You enjoy sharp, responsive handling

Toyo Open Country A/T II scores 93 vs 74 on handling.

Pick tire B You want the longest tread life

Toyo Open Country A/T II scores 92 vs 86 on treadwear.

Pick tire A You want a quieter cabin

Cooper Discoverer A/T3 scores 94 vs 89 on noise.

Pick tire B You drive through snowy winters

Toyo Open Country A/T II scores 91 vs 86 on snow.

Tire A · Cooper Discoverer A/T3
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Tire B · Toyo Open Country A/T II
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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) 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.