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Head-to-head Updated

Goodyear Assurance All-Season vs Dunlop Grandtrek ST20 — 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. 57

    Dry

    Grandtrek ST20 +11
    68
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online5168
  2. 58

    Wet

    Grandtrek ST20 +13
    71
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online5472
  3. 51

    Snow

    No comparison
    –
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online39–
  4. 60

    Comfort

    Grandtrek ST20 +8
    68
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online5168
  5. 63

    Noise

    No comparison
    –
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online58–
  6. 53

    Treadwear

    Grandtrek ST20 +15
    68
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online4469
  7. 48

    Handling

    Grandtrek ST20 +22
    70
    Why this score
    SourceAssurance All-SeasonGrandtrek ST20
    Reviews found online4870
Scores at a glance
CategoryGoodyear Assurance All-SeasonDunlop Grandtrek ST20
Relative Score 55 69
Dry 57 68
Wet 58 71
Snow 51 –
Comfort 60 68
Noise 63 –
Treadwear 53 68
Handling 48 70

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.

Important
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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

Assurance All-Season

Grandtrek ST20

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 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

Tire B 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

Specs side by side

Attribute A · Goodyear Assurance All-Season B · Dunlop Grandtrek ST20
Category—All Season
Vehicle typePassenger Car / CrossoverSUV and 4x4
Sizes available513
Rim diameters14″ – 20″16″ – 17″
Tread depth9/32″—
UTQG600 A B—
Treadwear warranty65,000 mi—
SidewallBlackwall—
Max pressure51 psi—

Which one should you actually buy?

Goodyear Assurance All-Season

Dunlop Grandtrek ST20

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

Pick tire B You enjoy sharp, responsive handling

Dunlop Grandtrek ST20 scores 70 vs 48 on handling.

Pick tire B You want the longest tread life

Dunlop Grandtrek ST20 scores 68 vs 53 on treadwear.

Pick tire B Your priority is wet-weather safety

Dunlop Grandtrek ST20 scores 71 vs 58 on wet.

Pick tire B You want the most grip on dry roads

Dunlop Grandtrek ST20 scores 68 vs 57 on dry.

Tire A · Goodyear Assurance All-Season
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Tire B · Dunlop Grandtrek ST20
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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