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Head-to-head Updated

Dunlop Grandtrek ST30 vs Michelin Defender LTX M/S — Compared

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

Defender LTX M/S is ahead, 76–52

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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. 53

    Dry

    Defender LTX M/S +23
    76
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online4581
  2. 54

    Wet

    Defender LTX M/S +24
    78
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online4881
  3. 54

    Snow

    Defender LTX M/S +18
    72
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online4473
  4. 55

    Comfort

    Defender LTX M/S +18
    73
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online4276
  5. 54

    Noise

    Defender LTX M/S +16
    70
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online3474
  6. 51

    Treadwear

    Defender LTX M/S +25
    76
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Professional tests (TWG score)–74
    Reviews found online4278
  7. 46

    Handling

    Defender LTX M/S +32
    78
    Why this score
    SourceGrandtrek ST30Defender LTX M/S
    Reviews found online4678
Scores at a glance
CategoryDunlop Grandtrek ST30Michelin Defender LTX M/S
Relative Score 52 76
Dry 53 76
Wet 54 78
Snow 54 72
Comfort 55 73
Noise 54 70
Treadwear 51 76
Handling 46 78

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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Recomputed
Headline score

Grandtrek ST30

Defender LTX M/S

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 Defender LTX M/S

Pros

  • Exceptional tread longevity and mileage lifespan
  • Quiet and smooth ride quality at highway speeds
  • Strong year-round traction across dry, wet, and light snow conditions

Cons

  • High upfront purchase price
  • Subpar performance in deep mud, sand, and off-road environments
  • Limited ice and severe winter capability compared to dedicated winter tires
All owner themes in the Defender LTX M/S review

Specs side by side

Attribute A · Dunlop Grandtrek ST30 B · Michelin Defender LTX M/S
CategoryAll SeasonAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available5—
Rim diameters17″ – 19″—
Tread depth10/32″—
UTQG360 A A—
SidewallBlackwall—
Max pressure51 psi—

Which one should you actually buy?

Dunlop Grandtrek ST30

Michelin Defender LTX M/S

Winner: Michelin Defender LTX M/S — better handling, treadwear and wet. It leads or ties in every category we score.

Pick tire B You enjoy sharp, responsive handling

Michelin Defender LTX M/S scores 78 vs 46 on handling.

Pick tire B You want the longest tread life

Michelin Defender LTX M/S scores 76 vs 51 on treadwear.

Pick tire B Your priority is wet-weather safety

Michelin Defender LTX M/S scores 78 vs 54 on wet.

Pick tire B You want the most grip on dry roads

Michelin Defender LTX M/S scores 76 vs 53 on dry.

Tire A · Dunlop Grandtrek ST30
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Tire B · Michelin Defender LTX M/S
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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.

76

Leads

Defender LTX M/S

Amazon