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Head-to-head Updated

Kumho Ecsta STX KL12 vs Toyo Proxes ST — 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 15 + 14 owner reviews. How we score

Proxes ST is ahead, 71–60

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Kumho Ecsta STX KL12
Tire AKumho

Ecsta STX KL12

Summer High Performance tires

Provisional

Tests – · none yet Owners 57 · 15 reviews

Toyo Proxes ST
Tire BToyo

Proxes ST

All Season

Provisional

Tests – · none yet Owners 73 · 14 reviews

Category by category

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

  1. 61

    Dry

    Proxes ST +11
    72
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 63 (est.)≈ 71 (est.)
    Reviews found online5775

    Ecsta STX KL12: 60% × 63.4 (est.) + 40% × 56.9 = 61

    Proxes ST: 60% × 70.5 (est.) + 40% × 74.7 = 72

    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 0.40).

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

  2. 57

    Wet

    Proxes ST +18
    75
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 60 (est.)≈ 74 (est.)
    Reviews found online5277

    Ecsta STX KL12: 60% × 60.1 (est.) + 40% × 52.4 = 57

    Proxes ST: 60% × 73.6 (est.) + 40% × 76.6 = 75

    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 0.56).

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

  3. 63

    Snow

    Proxes ST +3
    66
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 66 (est.)≈ 68 (est.)
    Reviews found online5864

    Ecsta STX KL12: 60% × 66 (est.) + 40% × 58.2 = 63

    Proxes ST: 60% × 67.8 (est.) + 40% × 63.6 = 66

    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 0.33).

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

  4. 65

    Comfort

    Proxes ST +7
    72
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 68 (est.)≈ 70 (est.)
    Reviews found online6174

    Ecsta STX KL12: 60% × 67.8 (est.) + 40% × 61.4 = 65

    Proxes ST: 60% × 70 (est.) + 40% × 74.1 = 72

    No road tests of comfort for Ecsta STX KL12 or Proxes ST. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 67

    Noise

    No comparison
    –
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online67–

    Ecsta STX KL12: 60% × 67.3 (est.) + 40% × 66.8 = 67

    No road tests of noise for Ecsta STX KL12. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 61

    Treadwear

    Proxes ST +8
    69
    Why this score
    SourceEcsta STX KL12Proxes ST
    Professional tests (TWG score)≈ 63 (est.)≈ 67 (est.)
    Reviews found online5872

    Ecsta STX KL12: 60% × 63.3 (est.) + 40% × 58.1 = 61

    Proxes ST: 60% × 67.5 (est.) + 40% × 71.7 = 69

    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 0.31).

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

  7. 54

    Handling (owners)

    Proxes ST +17
    71
    Why this score
    SourceEcsta STX KL12Proxes ST
    Reviews found online5471
Scores at a glance
CategoryKumho Ecsta STX KL12Toyo Proxes ST
Relative Score 60 71
Dry 61 72
Wet 57 75
Snow 63 66
Comfort 65 72
Noise 67 –
Treadwear 61 69
Handling (owners) 54 71

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

Ecsta STX KL12

Proxes ST

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
All owner themes in the Ecsta STX KL12 review

Tire B Proxes ST

Pros

  • Exceptional tread life and long-term durability
  • Quiet and comfortable ride quality compared to other brands and run-flats
  • Strong dry and wet grip with good resistance to aquaplaning

Cons

  • Poor performance and limited traction in snow and ice
  • A small number of users experienced disappointing treadwear and longevity
  • Conflicting feedback regarding wet grip, with isolated reports of poor performance
All owner themes in the Proxes ST review

Specs side by side

Attribute A · Kumho Ecsta STX KL12 B · Toyo Proxes ST
CategorySummer High Performance tiresAll Season
Vehicle typeSUV and 4x4SUV and 4x4
Sizes available71
Rim diameters18″ – 22″19″
Tread depth11.5/32″—
UTQG420 A A—
SidewallBlackwall—
Max pressure50 psi—

Which one should you actually buy?

Kumho Ecsta STX KL12

Toyo Proxes ST

Winner: Toyo Proxes ST — better wet, handling and dry. 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. Toyo Proxes ST rests on little evidence so far (0 tests, 14 reviews), so read this result as provisional.

Pick tire B Your priority is wet-weather safety

Toyo Proxes ST scores 75 vs 57 on wet.

Pick tire B You enjoy sharp, responsive handling

Toyo Proxes ST scores 71 vs 54 on handling.

Pick tire B You want the most grip on dry roads

Toyo Proxes ST scores 72 vs 61 on dry.

Pick tire B You want the longest tread life

Toyo Proxes ST scores 69 vs 61 on treadwear.

Tire A · Kumho Ecsta STX KL12
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Tire B · Toyo Proxes ST
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Ecsta STX KL12 or Proxes ST?

Which is better in the wet, Ecsta STX KL12 or Proxes ST?

Toyo Proxes ST, 75 vs 57 on our wet score.

Which grips better on dry roads, Ecsta STX KL12 or Proxes ST?

Toyo Proxes ST, 72 vs 61 on our dry score.

Which is better in snow, Ecsta STX KL12 or Proxes ST?

Toyo Proxes ST, 66 vs 63 on our snow score.

Which is more comfortable, Ecsta STX KL12 or Proxes ST?

Toyo Proxes ST, 72 vs 65 on our comfort score.

Which lasts longer, Ecsta STX KL12 or Proxes ST?

Toyo Proxes ST, 69 vs 61 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