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Dunlop Grandtrek ST20 vs Dunlop SP Sport 300 — 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 + 21 owner reviews. How we score

Grandtrek ST20 is ahead, 70–60

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Dunlop Grandtrek ST20
Tire ADunlop

Grandtrek ST20

All Season

± 8Provisional

Tests – · none yet Owners 71 · 9 reviews

Dunlop SP Sport 300
Tire BDunlop

SP Sport 300

All Season

± 8

Tests – · none yet Owners 57 · 21 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

    Grandtrek ST20 +10
    59
    Why this score
    SourceGrandtrek ST20SP Sport 300
    Professional tests (TWG score)≈ 68 (est.)≈ 62 (est.)
    Reviews found online6955

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

    SP Sport 300: 60% × 62.5 (est.) + 40% × 54.7 = 59

    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 SP Sport 300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 72

    Wet

    Grandtrek ST20 +10
    62
    Why this score
    SourceGrandtrek ST20SP Sport 300
    Professional tests (TWG score)≈ 72 (est.)≈ 64 (est.)
    Reviews found online7359

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

    SP Sport 300: 60% × 64.1 (est.) + 40% × 58.6 = 62

    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 SP Sport 300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 68

    Comfort

    Grandtrek ST20 +11
    57
    Why this score
    SourceGrandtrek ST20SP Sport 300
    Professional tests (TWG score)≈ 68 (est.)≈ 65 (est.)
    Reviews found online6752

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

    SP Sport 300: 40% × 65.3 (est.) + 60% × 51.8 = 57

    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 SP Sport 300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  4. 69

    Treadwear

    Grandtrek ST20 +6
    63
    Why this score
    SourceGrandtrek ST20SP Sport 300
    Professional tests (TWG score)≈ 68 (est.)≈ 65 (est.)
    Reviews found online7161

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

    SP Sport 300: 60% × 64.7 (est.) + 40% × 61.4 = 63

    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 SP Sport 300. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  5. 71

    Handling (owners)

    Grandtrek ST20 +20
    51
    Why this score
    SourceGrandtrek ST20SP Sport 300
    Reviews found online7151
Scores at a glance
CategoryDunlop Grandtrek ST20Dunlop SP Sport 300
Relative Score 70 60
Dry 69 59
Wet 72 62
Comfort 68 57
Treadwear 69 63
Handling (owners) 71 51

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
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
± 8

Grandtrek ST20

± 8

SP Sport 300

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 SP Sport 300

Pros

  • Exceptional tread life and mileage, with many users reporting up to 40,000 to 50,000+ miles (or 80,000 km)
  • Low road noise levels during the majority of the tire's lifespan
  • Reliable dry and wet grip for everyday city and highway driving

Cons

  • Firm, hard ride quality that some drivers find lacking in comfort
  • Increased road noise and steering wheel vibration as the tread wears down to around 3mm
  • Subpar wet weather traction reported by a few users
All owner themes in the SP Sport 300 review

Specs side by side

Attribute A · Dunlop Grandtrek ST20 B · Dunlop SP Sport 300
CategoryAll SeasonAll Season
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available31
Rim diameters16″ – 17″15″
UTQG300 B A - B300 A A

Which one should you actually buy?

Dunlop Grandtrek ST20

Dunlop SP Sport 300

Winner: Dunlop Grandtrek ST20 — better handling, comfort and dry. It leads or ties in every category we score. Dunlop Grandtrek ST20 rests on little evidence so far (0 tests, 9 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Dunlop Grandtrek ST20 scores 71 vs 51 on handling.

Pick tire A You want the most comfortable ride

Dunlop Grandtrek ST20 scores 68 vs 57 on comfort.

Pick tire A You want the most grip on dry roads

Dunlop Grandtrek ST20 scores 69 vs 59 on dry.

Pick tire A Your priority is wet-weather safety

Dunlop Grandtrek ST20 scores 72 vs 62 on wet.

Tire A · Dunlop Grandtrek ST20
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Tire B · Dunlop SP Sport 300
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Grandtrek ST20 or SP Sport 300?

Which is better in the wet, Grandtrek ST20 or SP Sport 300?

Dunlop Grandtrek ST20, 72 vs 62 on our wet score.

Which grips better on dry roads, Grandtrek ST20 or SP Sport 300?

Dunlop Grandtrek ST20, 69 vs 59 on our dry score.

Which is more comfortable, Grandtrek ST20 or SP Sport 300?

Dunlop Grandtrek ST20, 68 vs 57 on our comfort score.

Which lasts longer, Grandtrek ST20 or SP Sport 300?

Dunlop Grandtrek ST20, 69 vs 63 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