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Head-to-head Updated

Dunlop Grandtrek ST20 vs BFGoodrich Trail-Terrain T/A — 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 9 + 102 owner reviews. How we score

Grandtrek ST20 leads, 70–68 Narrow edge

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Dunlop Grandtrek ST20
Tire ADunlop

Grandtrek ST20

All Season

± 8Provisional

Tests – · none yet Owners 71 · 9 reviews

Category by category

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

  1. 69

    Dry

    Trail-Terrain T/A +2
    71
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)≈ 68 (est.)≈ 70 (est.)
    Reviews found online6973

    Grandtrek ST20: 60% × 68.4 (est.) + 40% × 69 = 69

    Trail-Terrain T/A: 60% × 69.8 (est.) + 40% × 72.5 = 71

    No road tests of dry for Grandtrek ST20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

    No road tests of dry for Trail-Terrain T/A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 72

    Wet

    Grandtrek ST20 +7
    65
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)≈ 72 (est.)≈ 66 (est.)
    Reviews found online7363

    Grandtrek ST20: 60% × 72 (est.) + 40% × 73.1 = 72

    Trail-Terrain T/A: 60% × 66.3 (est.) + 40% × 62.6 = 65

    No road tests of wet for Grandtrek ST20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for Trail-Terrain T/A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. –

    Snow

    No comparison
    77
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)–≈ 74 (est.)
    Reviews found online–82

    Trail-Terrain T/A: 60% × 74.2 (est.) + 40% × 82.2 = 77

    No road tests of snow for Trail-Terrain T/A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 68

    Comfort

    Grandtrek ST20 +3
    65
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)≈ 68 (est.)≈ 68 (est.)
    Reviews found online6764

    Grandtrek ST20: 40% × 68.3 (est.) + 60% × 67.1 = 68

    Trail-Terrain T/A: 40% × 67.6 (est.) + 60% × 63.5 = 65

    No road tests of comfort for Grandtrek ST20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for Trail-Terrain T/A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. –

    Noise

    No comparison
    67
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)–≈ 66 (est.)
    Reviews found online–69

    Trail-Terrain T/A: 60% × 66.4 (est.) + 40% × 69 = 67

    No road tests of noise for Trail-Terrain T/A. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 69

    Treadwear

    Trail-Terrain T/A +3
    72
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Professional tests (TWG score)≈ 68 (est.)≈ 69 (est.)
    Reviews found online7175

    Grandtrek ST20: 60% × 68.2 (est.) + 40% × 71.2 = 69

    Trail-Terrain T/A: 60% × 69.5 (est.) + 40% × 74.7 = 72

    No road tests of treadwear for Grandtrek ST20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for Trail-Terrain T/A. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 71

    Handling (owners)

    Grandtrek ST20 +7
    64
    Why this score
    SourceGrandtrek ST20Trail-Terrain T/A
    Reviews found online7164
Scores at a glance
CategoryDunlop Grandtrek ST20BFGoodrich Trail-Terrain T/A
Relative Score 70 68
Dry 69 71
Wet 72 65
Snow – 77
Comfort 68 65
Noise – 67
Treadwear 69 72
Handling (owners) 71 64

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

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

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
± 8

Grandtrek ST20

± 8

Trail-Terrain T/A

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 ST20

Pros

  • Impressive tread life and overall durability
  • Consistent and predictable handling in mixed weather conditions
  • Strong performance for light off-road and towing applications

Cons

  • Noticeable reduction in wet grip at lower tread depths (below 3mm)
  • Tendency for sidewalls to develop cracks or crazing over time
  • Increased road noise on rough or concrete surfaces
All owner themes in the Grandtrek ST20 review

Tire B Trail-Terrain T/A

Pros

  • Low road noise for an all-terrain tire, with several reviewers calling it quieter than previous tires such as the AT3 and other all-terrains
  • Strong snow and ice performance, including a Colorado snowstorm and multiple Alps trips with up to a foot of snow
  • Comfortable, smooth ride and good handling and braking on the road

Cons

  • Poor wet-weather traction reported by several reviewers, including wheelspin, lack of confidence on wet roads and ABS activation issues
  • Some reviewers found road noise high on paved surfaces, and one called it outrageously noisy, though others found it quiet
  • Wear is faster for some owners, with one set nearing replacement after about 20,000 miles and two years
All owner themes in the Trail-Terrain T/A review

Specs side by side

Attribute A · Dunlop Grandtrek ST20 B · BFGoodrich Trail-Terrain T/A
CategoryAll SeasonAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available350
Rim diameters16″ – 17″15″ – 22″
Tread depth—11 - 13/32″
UTQG300 B A - B660 A A - B
Sidewall—Black Side Wall - Raised Outline White Lettering
Max pressure—44 - 51 psi
Sizes in common22

Which one should you actually buy?

Dunlop Grandtrek ST20

BFGoodrich Trail-Terrain T/A

Narrow edge: Dunlop Grandtrek ST20 — better wet, handling and comfort. Pick the BFGoodrich Trail-Terrain T/A if treadwear matters most to you. Dunlop Grandtrek ST20 rests on little evidence so far (0 tests, 9 reviews), so read this result as provisional.

Pick tire A Your priority is wet-weather safety

Dunlop Grandtrek ST20 scores 72 vs 65 on wet.

Pick tire A You enjoy sharp, responsive handling

Dunlop Grandtrek ST20 scores 71 vs 64 on handling.

Pick tire A You want the most comfortable ride

Dunlop Grandtrek ST20 scores 68 vs 65 on comfort.

Pick tire B You want the longest tread life

BFGoodrich Trail-Terrain T/A scores 72 vs 69 on treadwear.

Tire A · Dunlop Grandtrek ST20
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Tire B · BFGoodrich Trail-Terrain T/A
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Grandtrek ST20 or Trail-Terrain T/A?

Which is better in the wet, Grandtrek ST20 or Trail-Terrain T/A?

Dunlop Grandtrek ST20, 72 vs 65 on our wet score.

Which grips better on dry roads, Grandtrek ST20 or Trail-Terrain T/A?

Neither, by our numbers: 69 vs 71 on the dry score, within 3 points.

Which is more comfortable, Grandtrek ST20 or Trail-Terrain T/A?

Dunlop Grandtrek ST20, 68 vs 65 on our comfort score.

Which lasts longer, Grandtrek ST20 or Trail-Terrain T/A?

BFGoodrich Trail-Terrain T/A, 72 vs 69 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