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Head-to-head Updated

Dunlop Grandtrek AT20 vs Toyo Open Country WT — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 57 + 5 owner reviews. How we score

Open Country WT is ahead, 75–45

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Category by category

Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.

  1. 43

    Dry

    Open Country WT +32
    75
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 52 (est.)≈ 72 (est.)
    Reviews found online2979

    Grandtrek AT20: 60% × 52.2 (est.) + 40% × 29.2 = 43

    Open Country WT: 60% × 72.3 (est.) + 40% × 79.1 = 75

    No road tests of dry for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 43

    Wet

    Open Country WT +36
    79
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 50 (est.)≈ 77 (est.)
    Reviews found online3483

    Grandtrek AT20: 60% × 49.6 (est.) + 40% × 33.7 = 43

    Open Country WT: 60% × 77.1 (est.) + 40% × 82.9 = 79

    No road tests of wet for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 49

    Snow

    Open Country WT +23
    72
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 58 (est.)≈ 71 (est.)
    Reviews found online3574

    Grandtrek AT20: 60% × 58.3 (est.) + 40% × 34.8 = 49

    Open Country WT: 60% × 71.1 (est.) + 40% × 73.6 = 72

    No road tests of snow for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

    No road tests of snow for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 51

    Comfort

    Open Country WT +22
    73
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 63 (est.)≈ 70 (est.)
    Reviews found online3377

    Grandtrek AT20: 60% × 62.9 (est.) + 40% × 33.1 = 51

    Open Country WT: 60% × 70.4 (est.) + 40% × 76.6 = 73

    No road tests of comfort for Grandtrek AT20 or Open Country WT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 57

    Noise

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online43–

    Grandtrek AT20: 60% × 67.3 (est.) + 40% × 42.6 = 57

    No road tests of noise for Grandtrek AT20. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 52

    Treadwear

    Open Country WT +19
    71
    Why this score
    SourceGrandtrek AT20Open Country WT
    Professional tests (TWG score)≈ 58 (est.)≈ 68 (est.)
    Reviews found online4275

    Grandtrek AT20: 60% × 58.3 (est.) + 40% × 41.7 = 52

    Open Country WT: 60% × 68.4 (est.) + 40% × 74.5 = 71

    No road tests of treadwear for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

    No road tests of treadwear for Open Country WT. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 34

    Handling (owners)

    Open Country WT +46
    80
    Why this score
    SourceGrandtrek AT20Open Country WT
    Reviews found online3480
Scores at a glance
CategoryDunlop Grandtrek AT20Toyo Open Country WT
Relative Score 45 75
Dry 43 75
Wet 43 79
Snow 49 72
Comfort 51 73
Noise 57 –
Treadwear 52 71
Handling (owners) 34 80

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
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score

Grandtrek AT20

Open Country WT

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 Grandtrek AT20

Pros

  • Exceptional tread life and high mileage capability (often exceeding 40,000 to 60,000+ miles)
  • Comfortable, smooth, and quiet ride on tarmac and highways
  • Good stability and predictable handling in dry, warm weather conditions

Cons

  • Extremely poor and potentially unsafe traction on wet roads, leading to sliding and long braking distances
  • Unreliable or hazardous performance in winter conditions like snow and ice
  • Subpar off-road capabilities, including low puncture resistance on gravel and poor traction in mud or sand
All owner themes in the Grandtrek AT20 review

Tire B Open Country WT

Pros

  • Exceptional performance and traction in snow, ice, slush, and wet weather
  • Surprising longevity and slow tread wear over high mileage (20,000 to 30,000 miles)
  • Good versatility and capability for light off-road use, unmade tracks, and muddy fields

Cons

  • Slightly increased road noise compared to standard road tires, though not overly intrusive
All owner themes in the Open Country WT review

Specs side by side

Attribute A · Dunlop Grandtrek AT20 B · Toyo Open Country WT
CategoryAll-Terrain tireWinter
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available98
Rim diameters15″ – 18″16″ – 19″
SidewallBlackwall—
Sizes in common11

Which one should you actually buy?

Dunlop Grandtrek AT20

Toyo Open Country WT

Winner: Toyo Open Country WT — better handling, wet and dry. It leads or ties in every category we score. Toyo Open Country WT rests on little evidence so far (0 tests, 5 reviews), so read this result as provisional.

Pick tire B You enjoy sharp, responsive handling

Toyo Open Country WT scores 80 vs 34 on handling.

Pick tire B Your priority is wet-weather safety

Toyo Open Country WT scores 79 vs 43 on wet.

Pick tire B You want the most grip on dry roads

Toyo Open Country WT scores 75 vs 43 on dry.

Pick tire B You drive through snowy winters

Toyo Open Country WT scores 72 vs 49 on snow.

Tire A · Dunlop Grandtrek AT20
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Tire B · Toyo Open Country WT
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Grandtrek AT20 or Open Country WT?

Which is better in the wet, Grandtrek AT20 or Open Country WT?

Toyo Open Country WT, 79 vs 43 on our wet score.

Which grips better on dry roads, Grandtrek AT20 or Open Country WT?

Toyo Open Country WT, 75 vs 43 on our dry score.

Which is better in snow, Grandtrek AT20 or Open Country WT?

Toyo Open Country WT, 72 vs 49 on our snow score.

Which is more comfortable, Grandtrek AT20 or Open Country WT?

Toyo Open Country WT, 73 vs 51 on our comfort score.

Which lasts longer, Grandtrek AT20 or Open Country WT?

Toyo Open Country WT, 71 vs 52 on our treadwear score.

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