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Head-to-head Updated

Dunlop Grandtrek ST20 vs Goodyear Assurance All-Season — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

Grandtrek ST20 is ahead, 69–55

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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. 68

    Dry

    Grandtrek ST20 +11
    57
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online6851
  2. 71

    Wet

    Grandtrek ST20 +13
    58
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online7254
  3. –

    Snow

    No comparison
    51
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online–39
  4. 68

    Comfort

    Grandtrek ST20 +8
    60
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online6851
  5. –

    Noise

    No comparison
    63
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online–58
  6. 68

    Treadwear

    Grandtrek ST20 +15
    53
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online6944
  7. 70

    Handling

    Grandtrek ST20 +22
    48
    Why this score
    SourceGrandtrek ST20Assurance All-Season
    Reviews found online7048
Scores at a glance
CategoryDunlop Grandtrek ST20Goodyear Assurance All-Season
Relative Score 69 55
Dry 68 57
Wet 71 58
Snow – 51
Comfort 68 60
Noise – 63
Treadwear 68 53
Handling 70 48

Higher is better. The Relative Score follows your weights below; category scores do not change.

Weight the categories that matter to you

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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Neutral
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Neither tire has a score here yet, so this weight changes nothing.

Less important
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Less important
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Neither tire has a score here yet, so this weight changes nothing.

Important
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Neutral
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Recomputed
Headline score

Grandtrek ST20

Assurance All-Season

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 Assurance All-Season

Pros

  • High level of ride comfort and low road noise
  • Excellent value for the price point
  • Reliable dry and wet weather traction for non-aggressive drivers

Cons

  • Inconsistent tread life, with reports of premature wear well before the warranty limit
  • Poor performance in winter conditions, specifically on ice and deep snow
  • Occasional reports of vibration and balance issues immediately after installation
All owner themes in the Assurance All-Season review

Specs side by side

Attribute A · Dunlop Grandtrek ST20 B · Goodyear Assurance All-Season
CategoryAll Season—
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available351
Rim diameters16″ – 17″14″ – 20″
Tread depth—9/32″
UTQG—600 A B
Treadwear warranty—65,000 mi
Sidewall—Blackwall
Max pressure—51 psi

Which one should you actually buy?

Dunlop Grandtrek ST20

Goodyear Assurance All-Season

Winner: Dunlop Grandtrek ST20 — better handling, treadwear and wet. It leads or ties in every category we score.

Pick tire A You enjoy sharp, responsive handling

Dunlop Grandtrek ST20 scores 70 vs 48 on handling.

Pick tire A You want the longest tread life

Dunlop Grandtrek ST20 scores 68 vs 53 on treadwear.

Pick tire A Your priority is wet-weather safety

Dunlop Grandtrek ST20 scores 71 vs 58 on wet.

Pick tire A You want the most grip on dry roads

Dunlop Grandtrek ST20 scores 68 vs 57 on dry.

Tire A · Dunlop Grandtrek ST20
Check price on Amazon
Tire B · Goodyear Assurance All-Season
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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.

Community buzz from Reddit and forums is shown for context only — it never changes the score.

69

Leads

Grandtrek ST20

Amazon