tirewheelguide
Head-to-head Updated

Dunlop Grandtrek AT20 vs Michelin Defender LTX M/S — Compared

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

Defender LTX M/S is ahead, 76–46

Check price on Amazon · Defender LTX M/S or Grandtrek AT20 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.

Category by category

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

  1. 43

    Dry

    Defender LTX M/S +33
    76
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online2981
  2. 43

    Wet

    Defender LTX M/S +35
    78
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online3381
  3. 49

    Snow

    Defender LTX M/S +23
    72
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online3673
  4. 52

    Comfort

    Defender LTX M/S +21
    73
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online3476
  5. 57

    Noise

    Defender LTX M/S +12
    69
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online4274
  6. 52

    Treadwear

    Defender LTX M/S +24
    76
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Professional tests (TWG score)–74
    Reviews found online4278
  7. 34

    Handling

    Defender LTX M/S +44
    78
    Why this score
    SourceGrandtrek AT20Defender LTX M/S
    Reviews found online3478
Scores at a glance
CategoryDunlop Grandtrek AT20Michelin Defender LTX M/S
Relative Score 46 76
Dry 43 76
Wet 43 78
Snow 49 72
Comfort 52 73
Noise 57 69
Treadwear 52 76
Handling 34 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.

Important
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Less important
NoneLessNeutralMoreMost
Less important
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Recomputed
Headline score

Grandtrek AT20

Defender LTX M/S

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Grandtrek AT20

Pros

  • Exceptional tread life and high mileage capability (often exceeding 40,000 to 60,000+ miles)
  • Comfortable, smooth, and quiet ride on tarmac and highways
  • Good stability and predictable handling in dry, warm weather conditions

Cons

  • Extremely poor and potentially unsafe traction on wet roads, leading to sliding and long braking distances
  • Unreliable or hazardous performance in winter conditions like snow and ice
  • Subpar off-road capabilities, including low puncture resistance on gravel and poor traction in mud or sand
All owner themes in the Grandtrek AT20 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 AT20 B · Michelin Defender LTX M/S
CategoryAll SeasonAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available9—
Rim diameters15″ – 18″—
SidewallBlackwall—

Which one should you actually buy?

Dunlop Grandtrek AT20

Michelin Defender LTX M/S

Winner: Michelin Defender LTX M/S — better handling, wet and dry. 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 34 on handling.

Pick tire B Your priority is wet-weather safety

Michelin Defender LTX M/S scores 78 vs 43 on wet.

Pick tire B You want the most grip on dry roads

Michelin Defender LTX M/S scores 76 vs 43 on dry.

Pick tire B You want the longest tread life

Michelin Defender LTX M/S scores 76 vs 52 on treadwear.

Tire A · Dunlop Grandtrek AT20
Check price on Amazon
Tire B · Michelin Defender LTX M/S
Check price on Amazon

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

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