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Head-to-head Updated

Dunlop Grandtrek AT20 vs Bridgestone Dueler H/T D840 — 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 57 + 1 owner reviews. How we score

Check price on Amazon · Grandtrek AT20 Check price on Amazon · Dueler H/T D840
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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. 41

    Dry

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 51 (est.)–
    Reviews found online27–

    Grandtrek AT20: 60% × 50.9 (est.) + 40% × 27.3 = 41

    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 0.42).

  2. 42

    Wet

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 49 (est.)–
    Reviews found online32–

    Grandtrek AT20: 60% × 49 (est.) + 40% × 31.5 = 42

    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 0.55).

  3. 49

    Snow

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 58 (est.)–
    Reviews found online36–

    Grandtrek AT20: 60% × 57.9 (est.) + 40% × 36.3 = 49

    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 0.37).

  4. 43

    Comfort

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 62 (est.)–
    Reviews found online30–

    Grandtrek AT20: 40% × 62 (est.) + 60% × 30.1 = 43

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

  5. 56

    Noise

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online40–

    Grandtrek AT20: 60% × 66.6 (est.) + 40% × 39.7 = 56

    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. 51

    Treadwear

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Professional tests (TWG score)≈ 57 (est.)–
    Reviews found online41–

    Grandtrek AT20: 60% × 57.5 (est.) + 40% × 41.2 = 51

    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 0.35).

  7. 33

    Handling (owners)

    No comparison
    –
    Why this score
    SourceGrandtrek AT20Dueler H/T D840
    Reviews found online33–
Scores at a glance
CategoryDunlop Grandtrek AT20Bridgestone Dueler H/T D840
Relative Score 44 –
Dry 41 –
Wet 42 –
Snow 49 –
Comfort 43 –
Noise 56 –
Treadwear 51 –
Handling (owners) 33 –

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
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
± 7

Grandtrek AT20

Dueler H/T D840

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 Dueler H/T D840

Not enough owner reviews yet to extract themes.

Specs side by side

Attribute A · Dunlop Grandtrek AT20 B · Bridgestone Dueler H/T D840
CategoryAll-Terrain tireAll-Season tire
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available9—
Rim diameters15″ – 18″—
SidewallBlackwall—

Which one should you actually buy?

Dunlop Grandtrek AT20

Bridgestone Dueler H/T D840

Only Dunlop Grandtrek AT20 has enough test and review data for a Relative Score, so there is no head-to-head winner yet.

Tire A · Dunlop Grandtrek AT20
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Tire B · Bridgestone Dueler H/T D840
Check price on Amazon

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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