Tests – · none yet Owners 60 · 15 reviews
Head-to-head
Updated
Kumho Ecsta STX KL12 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 15 + 11 owner reviews. How we score
Defender LTX M/S is ahead, 79–62
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Tests – · 1 test Owners 83 · 11 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.
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64
Dry
Defender LTX M/S +1579Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) ≈ 65 (est.) ≈ 75 (est.) Reviews found online 62 84 Ecsta STX KL12: 60% × 65.4 (est.) + 40% × 61.9 = 64
Defender LTX M/S: 60% × 74.8 (est.) + 40% × 84.4 = 79
No road tests of dry for Ecsta STX KL12. 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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61
Wet
Defender LTX M/S +2182Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) ≈ 63 (est.) ≈ 79 (est.) Reviews found online 57 86 Ecsta STX KL12: 60% × 63.4 (est.) + 40% × 57.3 = 61
Defender LTX M/S: 60% × 79 (est.) + 40% × 85.7 = 82
No road tests of wet for Ecsta STX KL12. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
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64
Snow
Defender LTX M/S +1074Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) ≈ 67 (est.) ≈ 73 (est.) Reviews found online 59 77 Ecsta STX KL12: 60% × 67 (est.) + 40% × 59.2 = 64
Defender LTX M/S: 60% × 72.5 (est.) + 40% × 76.7 = 74
No road tests of snow for Ecsta STX KL12. 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).
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63
Comfort
Defender LTX M/S +1275Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) ≈ 67 (est.) ≈ 71 (est.) Reviews found online 61 78 Ecsta STX KL12: 40% × 67.1 (est.) + 60% × 60.6 = 63
Defender LTX M/S: 40% × 70.6 (est.) + 60% × 77.7 = 75
No road tests of comfort for Ecsta STX KL12. 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 Defender LTX M/S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
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67
Noise
No comparison–Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) ≈ 66 (est.) – Reviews found online 67 – Ecsta STX KL12: 60% × 66.3 (est.) + 40% × 66.9 = 67
No road tests of noise for Ecsta STX KL12. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
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62
Treadwear
Defender LTX M/S +1880Why this score
Source Ecsta STX KL12 Defender LTX M/S Professional tests (TWG score) · – / 1 tests ≈ 64 (est.) 75 Reviews found online 59 86 Ecsta STX KL12: 60% × 63.7 (est.) + 40% × 58.7 = 62
Defender LTX M/S: 60% × 75.4 + 40% × 86.3 = 80
No road tests of treadwear for Ecsta STX KL12. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
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57
Handling (owners)
Defender LTX M/S +2582Why this score
Source Ecsta STX KL12 Defender LTX M/S Reviews found online 57 82
Scores at a glance
| Category | Kumho Ecsta STX KL12 | Michelin Defender LTX M/S |
|---|---|---|
| Relative Score | 62 | 79 |
| Dry | 64 | 79 |
| Wet | 61 | 82 |
| Snow | 64 | 74 |
| Comfort | 63 | 75 |
| Noise | 67 | – |
| Treadwear | 62 | 80 |
| Handling (owners) | 57 | 82 |
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
62
/ 100
Ecsta STX KL12
79
/ 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 Ecsta STX KL12
Pros
- Excellent price-to-performance ratio
- High tread life and durability
- Strong wet weather grip and cornering stability
Cons
- Potential for increased road noise over time
- Inconsistent traction performance on certain vehicle chassis
- Accelerated wear on poor road surfaces
Tire B Defender LTX M/S
Pros
- Exceptional tread life and long-term durability, often exceeding 60,000 miles
- Smooth, quiet, and comfortable highway ride quality
- Strong traction and secure handling in wet, dry, and moderate snow conditions
Cons
- High initial purchase price compared to competitors
- Subpar off-road performance, specifically struggling in mud, sand, and loose gravel
- Limited ice performance compared to dedicated winter tires
Specs side by side
| Attribute | A · Kumho Ecsta STX KL12 | B · Michelin Defender LTX M/S |
|---|---|---|
| Category | Summer High Performance tires | All Season |
| Vehicle type | SUV and 4x4 | SUV and 4x4 |
| Sizes available | 7 | — |
| Rim diameters | 18″ – 22″ | — |
| Tread depth | 11.5/32″ | — |
| UTQG | 420 A A | 720 - 800 B A |
| Sidewall | Blackwall | — |
| Max pressure | 50 psi | — |
Which one should you actually buy?
62
/ 100
Kumho Ecsta STX KL12
79
/ 100
Michelin Defender LTX M/S
Winner: Michelin Defender LTX M/S — better handling, wet and treadwear. It leads or ties in every category we score. Kumho Ecsta STX KL12 rests on little evidence so far (0 tests, 15 reviews), so read this result as provisional. Michelin Defender LTX M/S rests on little evidence so far (1 test, 11 reviews), so read this result as provisional.
Pick tire B
You enjoy sharp, responsive handling
Michelin Defender LTX M/S scores 82 vs 57 on handling.
Pick tire B
Your priority is wet-weather safety
Michelin Defender LTX M/S scores 82 vs 61 on wet.
Pick tire B
You want the longest tread life
Michelin Defender LTX M/S scores 80 vs 62 on treadwear.
Pick tire B
You want the most grip on dry roads
Michelin Defender LTX M/S scores 79 vs 64 on dry.
Tire A · Kumho Ecsta STX KL12
Tire B · Michelin Defender LTX M/S
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Ecsta STX KL12 or Defender LTX M/S?
Which is better in the wet, Ecsta STX KL12 or Defender LTX M/S?
Michelin Defender LTX M/S, 82 vs 61 on our wet score.
Which grips better on dry roads, Ecsta STX KL12 or Defender LTX M/S?
Michelin Defender LTX M/S, 79 vs 64 on our dry score.
Which is better in snow, Ecsta STX KL12 or Defender LTX M/S?
Michelin Defender LTX M/S, 74 vs 64 on our snow score.
Which is more comfortable, Ecsta STX KL12 or Defender LTX M/S?
Michelin Defender LTX M/S, 75 vs 63 on our comfort score.
Which lasts longer, Ecsta STX KL12 or Defender LTX M/S?
Michelin Defender LTX M/S, 80 vs 62 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