Tests – · none yet Owners 34 · 57 reviews
Head-to-head
Updated
Dunlop Grandtrek AT20 vs Michelin Defender LTX M/S — 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 + 1 road tests and 57 + 10 owner reviews. How we score
Defender LTX M/S is ahead, 78–44
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Tests – · 1 test Owners 82 · 10 reviews
Best test result: #2 of 13 in 2022 Consumer Reports All Season Truck Tires (tested tread life (miles))
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
41
Dry
Defender LTX M/S +3778Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) ≈ 51 (est.) ≈ 74 (est.) Reviews found online 27 83 Grandtrek AT20: 60% × 51 (est.) + 40% × 26.8 = 41
Defender LTX M/S: 60% × 74.3 (est.) + 40% × 82.9 = 78
No road tests of dry for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
No road tests of dry for Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
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42
Wet
Defender LTX M/S +3880Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) ≈ 49 (est.) ≈ 78 (est.) Reviews found online 31 84 Grandtrek AT20: 60% × 49.3 (est.) + 40% × 31.3 = 42
Defender LTX M/S: 60% × 78 (est.) + 40% × 84 = 80
No road tests of wet for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
No road tests of wet for Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
-
50
Snow
Defender LTX M/S +2373Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) ≈ 59 (est.) ≈ 72 (est.) Reviews found online 36 75 Grandtrek AT20: 60% × 59.2 (est.) + 40% × 35.5 = 50
Defender LTX M/S: 60% × 71.9 (est.) + 40% × 75.3 = 73
No road tests of snow for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
No road tests of snow for Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
-
43
Comfort
Defender LTX M/S +3275Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) ≈ 62 (est.) ≈ 71 (est.) Reviews found online 30 77 Grandtrek AT20: 40% × 62.1 (est.) + 60% × 29.8 = 43
Defender LTX M/S: 40% × 70.6 (est.) + 60% × 77.4 = 75
No road tests of comfort for Grandtrek AT20 or Defender LTX M/S. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
56
Noise
No comparison–Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 39 – Grandtrek AT20: 60% × 66.5 (est.) + 40% × 39.3 = 56
No road tests of noise for Grandtrek AT20. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
51
Treadwear
Defender LTX M/S +2879Why this score
Source Grandtrek AT20 Defender LTX M/S Professional tests (TWG score) · – / 1 tests ≈ 58 (est.) 75 Reviews found online 42 86 Grandtrek AT20: 60% × 57.8 (est.) + 40% × 41.6 = 51
Defender LTX M/S: 60% × 75.4 + 40% × 85.5 = 79
No road tests of treadwear for Grandtrek AT20. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
33
Handling (owners)
Defender LTX M/S +4780Why this score
Source Grandtrek AT20 Defender LTX M/S Reviews found online 33 80
Scores at a glance
| Category | Dunlop Grandtrek AT20 | Michelin Defender LTX M/S |
|---|---|---|
| Relative Score | 44 | 78 |
| Dry | 41 | 78 |
| Wet | 42 | 80 |
| Snow | 50 | 73 |
| Comfort | 43 | 75 |
| Noise | 56 | – |
| Treadwear | 51 | 79 |
| Handling (owners) | 33 | 80 |
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
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
44
/ 100
Grandtrek AT20
78
/ 100
Defender LTX M/S
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 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
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
Specs side by side
| Attribute | A · Dunlop Grandtrek AT20 | B · Michelin Defender LTX M/S |
|---|---|---|
| Category | All-Terrain tire | All Season |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 9 | — |
| Rim diameters | 15″ – 18″ | — |
| Sidewall | Blackwall | — |
Which one should you actually buy?
44
/ 100
Dunlop Grandtrek AT20
78
/ 100
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. Michelin Defender LTX M/S rests on little evidence so far (1 test, 10 reviews), so read this result as provisional.
Pick tire B
You enjoy sharp, responsive handling
Michelin Defender LTX M/S scores 80 vs 33 on handling.
Pick tire B
Your priority is wet-weather safety
Michelin Defender LTX M/S scores 80 vs 42 on wet.
Pick tire B
You want the most grip on dry roads
Michelin Defender LTX M/S scores 78 vs 41 on dry.
Pick tire B
You want the most comfortable ride
Michelin Defender LTX M/S scores 75 vs 43 on comfort.
Tire A · Dunlop Grandtrek AT20
Tire B · Michelin Defender LTX M/S
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Grandtrek AT20 or Defender LTX M/S?
Which is better in the wet, Grandtrek AT20 or Defender LTX M/S?
Michelin Defender LTX M/S, 80 vs 42 on our wet score.
Which grips better on dry roads, Grandtrek AT20 or Defender LTX M/S?
Michelin Defender LTX M/S, 78 vs 41 on our dry score.
Which is better in snow, Grandtrek AT20 or Defender LTX M/S?
Michelin Defender LTX M/S, 73 vs 50 on our snow score.
Which is more comfortable, Grandtrek AT20 or Defender LTX M/S?
Michelin Defender LTX M/S, 75 vs 43 on our comfort score.
Which lasts longer, Grandtrek AT20 or Defender LTX M/S?
Michelin Defender LTX M/S, 79 vs 51 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