tirewheelguide
Head-to-head Updated

Kumho Ecsta STX KL12 vs Toyo Proxes T1 Sport — 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 + 50 owner reviews. How we score

Proxes T1 Sport is ahead, 70–62

Check price on Amazon · Proxes T1 Sport or Ecsta STX KL12 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.

Kumho Ecsta STX KL12
Tire AKumho

Ecsta STX KL12

Summer High Performance tires

± 8Provisional

Tests – · none yet Owners 60 · 15 reviews

Toyo Proxes T1 Sport
Tire BToyo

Proxes T1 Sport

Summer

± 8

Tests 67 · 1 test Owners 71 · 50 reviews

Best test result: #3 of 10 in 2020 Auto Bild UHP 19 inch Tyre Test (straight aquaplaning)

Category by category

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

  1. 64

    Dry

    Proxes T1 Sport +5
    69
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score) · – / 1 tests≈ 65 (est.)63
    Reviews found online6278

    Ecsta STX KL12: 60% × 65.4 (est.) + 40% × 61.8 = 64

    Proxes T1 Sport: 60% × 62.7 + 40% × 78.3 = 69

    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 0.41).

  2. 61

    Wet

    Proxes T1 Sport +12
    73
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score) · – / 1 tests≈ 63 (est.)71
    Reviews found online5775

    Ecsta STX KL12: 60% × 63.4 (est.) + 40% × 57.4 = 61

    Proxes T1 Sport: 60% × 71.4 + 40% × 75.2 = 73

    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).

  3. 64

    Snow

    No comparison
    –
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online59–

    Ecsta STX KL12: 60% × 66.9 (est.) + 40% × 59.1 = 64

    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).

  4. 63

    Comfort

    Proxes T1 Sport +6
    69
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score)≈ 67 (est.)≈ 69 (est.)
    Reviews found online6169

    Ecsta STX KL12: 40% × 67 (est.) + 60% × 60.6 = 63

    Proxes T1 Sport: 40% × 68.8 (est.) + 60% × 69.3 = 69

    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 Proxes T1 Sport. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 67

    Noise

    Proxes T1 Sport +2
    69
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)71
    Reviews found online67≈ 66 (est.)

    Ecsta STX KL12: 60% × 66.4 (est.) + 40% × 67.1 = 67

    Proxes T1 Sport: 60% × 70.5 + 40% × 66.4 (est.) = 69

    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.

    No owner ratings of noise for Proxes T1 Sport. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  6. 62

    Treadwear

    Ecsta STX KL12 +1
    61
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score)≈ 64 (est.)≈ 63 (est.)
    Reviews found online5958

    Ecsta STX KL12: 60% × 63.7 (est.) + 40% × 58.7 = 62

    Proxes T1 Sport: 60% × 63.3 (est.) + 40% × 57.7 = 61

    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).

    No road tests of treadwear for Proxes T1 Sport. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 57

    Handling (owners)

    Proxes T1 Sport +20
    77
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Reviews found online5777
  8. –

    Efficiency

    No comparison
    71
    Why this score
    SourceEcsta STX KL12Proxes T1 Sport
    Professional tests (TWG score) · – / 1 tests–71
Scores at a glance
CategoryKumho Ecsta STX KL12Toyo Proxes T1 Sport
Relative Score 62 70
Dry 64 69
Wet 61 73
Snow 64 –
Comfort 63 69
Noise 67 69
Treadwear 62 61
Handling (owners) 57 77
Efficiency – 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

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Not important
NotLessNeutralImportantMost

Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.

Recomputed
Headline score
± 8

Ecsta STX KL12

± 8

Proxes T1 Sport

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 T1 Sport

Pros

  • Exceptional dry and wet grip for confident cornering and braking
  • High level of ride comfort and shock absorption, outperforming stiff run-flats
  • Lower price point compared to top-tier premium competitors while maintaining comparable performance

Cons

  • Rapid tread wear and short lifespan, with many users reporting the need for replacements well under 15,000 miles
  • Softer sidewalls can lead to a less direct or squirmy feel during aggressive cornering
  • Occasional sensitivity to road grooves, uneven surfaces, and standing water (hydroplaning tendencies)
All owner themes in the Proxes T1 Sport review

Specs side by side

Attribute A · Kumho Ecsta STX KL12 B · Toyo Proxes T1 Sport
CategorySummer High Performance tiresSummer
Vehicle typeSUV and 4x4Passenger Car / Crossover
Sizes available73
Rim diameters18″ – 22″16″ – 19″
Tread depth11.5/32″—
UTQG420 A A240 AA A
SidewallBlackwall—
Max pressure50 psi—
Sizes in common00

Which one should you actually buy?

Kumho Ecsta STX KL12

Toyo Proxes T1 Sport

Winner: Toyo Proxes T1 Sport — better handling, wet and comfort. Where the Kumho Ecsta STX KL12 is ahead, it is by less than 3 points. Kumho Ecsta STX KL12 rests on little evidence so far (0 tests, 15 reviews), so read this result as provisional.

Pick tire B You enjoy sharp, responsive handling

Toyo Proxes T1 Sport scores 77 vs 57 on handling.

Pick tire B Your priority is wet-weather safety

Toyo Proxes T1 Sport scores 73 vs 61 on wet.

Pick tire B You want the most comfortable ride

Toyo Proxes T1 Sport scores 69 vs 63 on comfort.

Pick tire B You want the most grip on dry roads

Toyo Proxes T1 Sport scores 69 vs 64 on dry.

Tire A · Kumho Ecsta STX KL12
Check price on Amazon
Tire B · Toyo Proxes T1 Sport
Check price on Amazon

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

Ecsta STX KL12 or Proxes T1 Sport?

Which is better in the wet, Ecsta STX KL12 or Proxes T1 Sport?

Toyo Proxes T1 Sport, 73 vs 61 on our wet score.

Which grips better on dry roads, Ecsta STX KL12 or Proxes T1 Sport?

Toyo Proxes T1 Sport, 69 vs 64 on our dry score.

Which is quieter, Ecsta STX KL12 or Proxes T1 Sport?

Neither, by our numbers: 67 vs 69 on the noise score, within 3 points.

Which is more comfortable, Ecsta STX KL12 or Proxes T1 Sport?

Toyo Proxes T1 Sport, 69 vs 63 on our comfort score.

Which lasts longer, Ecsta STX KL12 or Proxes T1 Sport?

Neither, by our numbers: 62 vs 61 on the treadwear score, within 3 points.

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