tirewheelguide
Head-to-head Updated

Dunlop Grandtrek ST30 vs Dunlop SP Sport 270 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 27 + 11 owner reviews. How we score

Grandtrek ST30 is ahead, 53–38

Check price on Amazon · Grandtrek ST30 or SP Sport 270 on Amazon
Add your size for an exact match
/R

Both Amazon links then search this exact size.

TireWheelGuide may earn a commission from purchases made through these links.

Dunlop SP Sport 270
Tire BDunlop

SP Sport 270

Summer

Provisional

Tests – · none yet Owners 23 · 11 reviews

Category by category

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

  1. 53

    Dry

    Grandtrek ST30 +10
    43
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 59 (est.)≈ 52 (est.)
    Reviews found online4530

    Grandtrek ST30: 60% × 58.5 (est.) + 40% × 44.9 = 53

    SP Sport 270: 60% × 52.3 (est.) + 40% × 29.5 = 43

    No road tests of dry for Grandtrek ST30. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

    No road tests of dry for SP Sport 270. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 54

    Wet

    Grandtrek ST30 +21
    33
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 58 (est.)≈ 42 (est.)
    Reviews found online4820

    Grandtrek ST30: 60% × 57.8 (est.) + 40% × 48.4 = 54

    SP Sport 270: 60% × 41.8 (est.) + 40% × 19.9 = 33

    No road tests of wet for Grandtrek ST30. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

    No road tests of wet for SP Sport 270. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 54

    Snow

    No comparison
    –
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 61 (est.)–
    Reviews found online43–

    Grandtrek ST30: 60% × 61 (est.) + 40% × 43.1 = 54

    No road tests of snow for Grandtrek ST30. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 55

    Comfort

    Grandtrek ST30 +6
    49
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 64 (est.)≈ 62 (est.)
    Reviews found online4130

    Grandtrek ST30: 60% × 64.3 (est.) + 40% × 41 = 55

    SP Sport 270: 60% × 62.3 (est.) + 40% × 29.8 = 49

    No road tests of comfort for Grandtrek ST30 or SP Sport 270. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 54

    Noise

    No comparison
    –
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online34–

    Grandtrek ST30: 60% × 67.3 (est.) + 40% × 34.2 = 54

    No road tests of noise for Grandtrek ST30. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 51

    Treadwear

    Grandtrek ST30 +13
    38
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Professional tests (TWG score)≈ 58 (est.)≈ 51 (est.)
    Reviews found online4118

    Grandtrek ST30: 60% × 58.1 (est.) + 40% × 41.2 = 51

    SP Sport 270: 60% × 51 (est.) + 40% × 18.1 = 38

    No road tests of treadwear for Grandtrek ST30. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

    No road tests of treadwear for SP Sport 270. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 46

    Handling (owners)

    Grandtrek ST30 +18
    28
    Why this score
    SourceGrandtrek ST30SP Sport 270
    Reviews found online4628
Scores at a glance
CategoryDunlop Grandtrek ST30Dunlop SP Sport 270
Relative Score 53 38
Dry 53 43
Wet 54 33
Snow 54 –
Comfort 55 49
Noise 54 –
Treadwear 51 38
Handling (owners) 46 28

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

Grandtrek ST30

SP Sport 270

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 ST30

Pros

  • Strong dry-pavement grip and straight-line stability
  • Competitive price point and value for money
  • High mileage potential for some drivers

Cons

  • Poor wet-weather performance and susceptibility to aquaplaning
  • High levels of road noise on various surfaces
  • Inconsistent tread life, with reports of rapid wear
All owner themes in the Grandtrek ST30 review

Tire B SP Sport 270

Pros

  • Acceptable performance in dry road conditions
  • Reasonable steering feel and quietness early in its lifespan

Cons

  • Extremely poor and dangerous wet weather traction, often described as driving on ice
  • Rapid and uneven tread wear, with many users needing replacements well under 30,000 km
  • Prone to significant understeer and wheel slip on steep slopes or during low-speed maneuvers in the rain
All owner themes in the SP Sport 270 review

Specs side by side

Attribute A · Dunlop Grandtrek ST30 B · Dunlop SP Sport 270
CategoryAll SeasonSummer
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available54
Rim diameters17″ – 19″17″ – 18″
Tread depth10/32″—
UTQG360 A A—
SidewallBlackwall—
Max pressure51 psi—
Sizes in common11

Which one should you actually buy?

Dunlop Grandtrek ST30

Dunlop SP Sport 270

Winner: Dunlop Grandtrek ST30 — better wet, handling and treadwear. It leads or ties in every category we score. Dunlop SP Sport 270 rests on little evidence so far (0 tests, 11 reviews), so read this result as provisional.

Pick tire A Your priority is wet-weather safety

Dunlop Grandtrek ST30 scores 54 vs 33 on wet.

Pick tire A You enjoy sharp, responsive handling

Dunlop Grandtrek ST30 scores 46 vs 28 on handling.

Pick tire A You want the longest tread life

Dunlop Grandtrek ST30 scores 51 vs 38 on treadwear.

Pick tire A You want the most grip on dry roads

Dunlop Grandtrek ST30 scores 53 vs 43 on dry.

Tire A · Dunlop Grandtrek ST30
Check price on Amazon
Tire B · Dunlop SP Sport 270
Check price on Amazon

TireWheelGuide may earn a commission from purchases made through these links.

Grandtrek ST30 or SP Sport 270?

Which is better in the wet, Grandtrek ST30 or SP Sport 270?

Dunlop Grandtrek ST30, 54 vs 33 on our wet score.

Which grips better on dry roads, Grandtrek ST30 or SP Sport 270?

Dunlop Grandtrek ST30, 53 vs 43 on our dry score.

Which is more comfortable, Grandtrek ST30 or SP Sport 270?

Dunlop Grandtrek ST30, 55 vs 49 on our comfort score.

Which lasts longer, Grandtrek ST30 or SP Sport 270?

Dunlop Grandtrek ST30, 51 vs 38 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