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Head-to-head Updated

Dunlop Grandtrek ST30 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 27 + 5 owner reviews. How we score

Open Country WT is ahead, 75–53

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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. 53

    Dry

    Open Country WT +22
    75
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 59 (est.)≈ 72 (est.)
    Reviews found online4579

    Grandtrek ST30: 60% × 58.5 (est.) + 40% × 44.9 = 53

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

    No road tests of dry for Grandtrek ST30. 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. 54

    Wet

    Open Country WT +25
    79
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 58 (est.)≈ 77 (est.)
    Reviews found online4883

    Grandtrek ST30: 60% × 57.8 (est.) + 40% × 48.4 = 54

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

    No road tests of wet for Grandtrek ST30. 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. 54

    Snow

    Open Country WT +18
    72
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 61 (est.)≈ 71 (est.)
    Reviews found online4374

    Grandtrek ST30: 60% × 61 (est.) + 40% × 43.1 = 54

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

    No road tests of snow for Grandtrek ST30. 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. 55

    Comfort

    Open Country WT +18
    73
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 64 (est.)≈ 70 (est.)
    Reviews found online4177

    Grandtrek ST30: 60% × 64.3 (est.) + 40% × 41 = 55

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

    No road tests of comfort for Grandtrek ST30 or Open Country WT. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 54

    Noise

    No comparison
    –
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online34–

    Grandtrek ST30: 60% × 67.3 (est.) + 40% × 34.2 = 54

    No road tests of noise for Grandtrek ST30. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 51

    Treadwear

    Open Country WT +20
    71
    Why this score
    SourceGrandtrek ST30Open Country WT
    Professional tests (TWG score)≈ 58 (est.)≈ 68 (est.)
    Reviews found online4175

    Grandtrek ST30: 60% × 58.1 (est.) + 40% × 41.2 = 51

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

    No road tests of treadwear for Grandtrek ST30. 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. 46

    Handling (owners)

    Open Country WT +34
    80
    Why this score
    SourceGrandtrek ST30Open Country WT
    Reviews found online4680
Scores at a glance
CategoryDunlop Grandtrek ST30Toyo Open Country WT
Relative Score 53 75
Dry 53 75
Wet 54 79
Snow 54 72
Comfort 55 73
Noise 54 –
Treadwear 51 71
Handling (owners) 46 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 ST30

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 ST30

Pros

  • Strong dry-pavement grip and straight-line stability
  • Competitive price point and value for money
  • High mileage potential for some drivers

Cons

  • Poor wet-weather performance and susceptibility to aquaplaning
  • High levels of road noise on various surfaces
  • Inconsistent tread life, with reports of rapid wear
All owner themes in the Grandtrek ST30 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 ST30 B · Toyo Open Country WT
CategoryAll SeasonWinter
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available58
Rim diameters17″ – 19″16″ – 19″
Tread depth10/32″—
UTQG360 A A—
SidewallBlackwall—
Max pressure51 psi—
Sizes in common00

Which one should you actually buy?

Dunlop Grandtrek ST30

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 46 on handling.

Pick tire B Your priority is wet-weather safety

Toyo Open Country WT scores 79 vs 54 on wet.

Pick tire B You want the most grip on dry roads

Toyo Open Country WT scores 75 vs 53 on dry.

Pick tire B You want the longest tread life

Toyo Open Country WT scores 71 vs 51 on treadwear.

Tire A · Dunlop Grandtrek ST30
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Tire B · Toyo Open Country WT
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Grandtrek ST30 or Open Country WT?

Which is better in the wet, Grandtrek ST30 or Open Country WT?

Toyo Open Country WT, 79 vs 54 on our wet score.

Which grips better on dry roads, Grandtrek ST30 or Open Country WT?

Toyo Open Country WT, 75 vs 53 on our dry score.

Which is better in snow, Grandtrek ST30 or Open Country WT?

Toyo Open Country WT, 72 vs 54 on our snow score.

Which is more comfortable, Grandtrek ST30 or Open Country WT?

Toyo Open Country WT, 73 vs 55 on our comfort score.

Which lasts longer, Grandtrek ST30 or Open Country WT?

Toyo Open Country WT, 71 vs 51 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