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Head-to-head Updated

Kumho Ecsta PS31 vs Kumho Ecsta PS91 — 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 + 6 road tests and 259 + 485 owner reviews. How we score

Ecsta PS31 is ahead, 65–57

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Kumho Ecsta PS31
Tire AKumho

Ecsta PS31

Summer

± 7

Tests – · none yet Owners 63 · 259 reviews

Kumho Ecsta PS91
Tire BKumho

Ecsta PS91

Summer

± 5

Tests 77 · 6 tests Owners 42 · 485 reviews

Best test result: #1 of 11 in 2023 AUTO Straßenverkehr 2023 Summer Tire Test R18 (exterior noise)

“Putting some Kumho Ecsta PS91s on. Curious how they’ll do since my go to Falken rt660 doesn’t come in the oem 18” sizes”

Category by category

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

  1. 63

    Dry

    Ecsta PS91 +3
    66
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score) · – / 6 tests≈ 65 (est.)77
    Reviews found online6051

    Ecsta PS31: 60% × 64.6 (est.) + 40% × 59.7 = 63

    Ecsta PS91: 60% × 76.7 + 40% × 50.9 = 66

    No road tests of dry for Ecsta PS31. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 68

    Wet

    Level
    68
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score) · – / 6 tests≈ 69 (est.)79
    Reviews found online6852

    Ecsta PS31: 60% × 69 (est.) + 40% × 67.6 = 68

    Ecsta PS91: 60% × 78.7 + 40% × 51.5 = 68

    No road tests of wet for Ecsta PS31. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 58

    Snow

    Ecsta PS31 +20
    38
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score)≈ 64 (est.)≈ 53 (est.)
    Reviews found online4915

    Ecsta PS31: 60% × 63.7 (est.) + 40% × 49.2 = 58

    Ecsta PS91: 60% × 52.9 (est.) + 40% × 15 = 38

    No road tests of snow for Ecsta PS31. 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 Ecsta PS91. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 65

    Comfort

    Ecsta PS31 +11
    54
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score)≈ 68 (est.)≈ 64 (est.)
    Reviews found online6448

    Ecsta PS31: 40% × 67.7 (est.) + 60% × 63.9 = 65

    Ecsta PS91: 40% × 64.4 (est.) + 60% × 47.7 = 54

    No road tests of comfort for Ecsta PS31. 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 Ecsta PS91. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 66

    Noise

    Ecsta PS31 +4
    62
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score) · – / 3 tests≈ 66 (est.)70
    Reviews found online6650

    Ecsta PS31: 60% × 66.4 (est.) + 40% × 66.3 = 66

    Ecsta PS91: 60% × 70.2 + 40% × 49.6 = 62

    No road tests of noise for Ecsta PS31. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 65

    Treadwear

    Ecsta PS31 +21
    44
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score)≈ 66 (est.)≈ 53 (est.)
    Reviews found online6530

    Ecsta PS31: 60% × 65.9 (est.) + 40% × 64.8 = 65

    Ecsta PS91: 60% × 53.4 (est.) + 40% × 30.2 = 44

    No road tests of treadwear for Ecsta PS31. 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 Ecsta PS91. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 68

    Handling (owners)

    Ecsta PS31 +15
    53
    Why this score
    SourceEcsta PS31Ecsta PS91
    Reviews found online6853
  8. –

    Efficiency

    No comparison
    47
    Why this score
    SourceEcsta PS31Ecsta PS91
    Professional tests (TWG score) · – / 3 tests–47
Scores at a glance
CategoryKumho Ecsta PS31Kumho Ecsta PS91
Relative Score 65 57
Dry 63 66
Wet 68 68
Snow 58 38
Comfort 65 54
Noise 66 62
Treadwear 65 44
Handling (owners) 68 53
Efficiency – 47

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
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
± 7

Ecsta PS31

± 5

Ecsta PS91

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 PS31

Pros

  • Excellent price-to-performance ratio
  • High levels of ride comfort and low road noise
  • Strong dry traction for daily and spirited street driving

Cons

  • Soft sidewalls lead to vague steering response and 'squirm' during aggressive maneuvers
  • Inconsistent wet weather performance reported by some users, particularly in deep standing water
  • Tread life can be shorter than expected for some driving styles
All owner themes in the Ecsta PS31 review

Tire B Ecsta PS91

Pros

  • Exceptional dry and wet grip providing high confidence during spirited driving
  • Significantly more affordable than premium flagship alternatives while offering comparable performance
  • Stiff sidewalls enhance steering response, cornering stability, and feedback

Cons

  • Accelerated tread wear and shorter lifespan, particularly with aggressive driving or on heavier vehicles
  • Stiff sidewalls result in a firmer, less comfortable ride that transmits road imperfections
  • Tendency to tramline or follow road grooves on straight highways
All owner themes in the Ecsta PS91 review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Kumho Ecsta PS31

We haven't collected enough community discussion about this tire yet.

Tire B

Kumho Ecsta PS91

Mixed

The community views the Kumho Ecsta PS91 as an attractive, budget-friendly max performance summer tire that offers decent street traction, low noise, and a tread pattern resembling higher-end options like Michelin. However, opinions are split; while some drivers praise them as a great value alternative for daily driving and light spirited use, enthusiasts note limitations regarding rapid wear, subpar track endurance, and inferior grip compared to top-tier performance tires.

r/Porsche ·11 upvotes ·2022-02-12

“Putting some Kumho Ecsta PS91s on. Curious how they’ll do since my go to Falken rt660 doesn’t come in the oem 18” sizes”
r/E90 ·180 upvotes ·2025-09-17

“New meaty tires set up installed, now I can order spacers Went up tire sizes and they definitely fill the gap a bit. First time running sticky kumhos on anytime so excited to see how they turn out.Specs are Kumho Ecsta Ps91 235/40/18 up front and 265/40/18 in the rear. Read more”
r/Autocross ·1 upvote ·2025-09-30

“You will get smoked if you go with the PS91. They also do not hold well under abuse. I feel that the RE-71RS would be a better value for you simply because they'll hold and remain consistent even as they wear very far down. I've used the RE-71RS at a track day before and even as the tires were chunking and melting, they still maintained their grip, as if they were just BEGGING to be abused, to see how far they could be pushed.”
Top themes
#Budget friendly pricing#Street performance and comfort#Tread wear and longevity#Track and grip limitations#Comparison to Michelin

Based on 46 community posts

Specs side by side

Attribute A · Kumho Ecsta PS31 B · Kumho Ecsta PS91
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available211
Rim diameters15″ – 18″19″
Tread depth10/32″9.5/32″
UTQG460 A A260 A A
SidewallBlackwallBlackwall
Max pressure51 psi50 psi

Which one should you actually buy?

Kumho Ecsta PS31

Kumho Ecsta PS91

Winner: Kumho Ecsta PS31 — better treadwear, snow and handling. Pick the Kumho Ecsta PS91 if dry matters most to you.

Pick tire A You want the longest tread life

Kumho Ecsta PS31 scores 65 vs 44 on treadwear.

Pick tire A You drive through snowy winters

Kumho Ecsta PS31 scores 58 vs 38 on snow.

Pick tire A You enjoy sharp, responsive handling

Kumho Ecsta PS31 scores 68 vs 53 on handling.

Pick tire A You want the most comfortable ride

Kumho Ecsta PS31 scores 65 vs 54 on comfort.

Tire A · Kumho Ecsta PS31
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Tire B · Kumho Ecsta PS91
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Ecsta PS31 or Ecsta PS91?

Which is better in the wet, Ecsta PS31 or Ecsta PS91?

Neither, by our numbers: 68 vs 68 on the wet score, within 3 points.

Which grips better on dry roads, Ecsta PS31 or Ecsta PS91?

Kumho Ecsta PS91, 66 vs 63 on our dry score.

Which is better in snow, Ecsta PS31 or Ecsta PS91?

Kumho Ecsta PS31, 58 vs 38 on our snow score.

Which is quieter, Ecsta PS31 or Ecsta PS91?

Kumho Ecsta PS31, 66 vs 62 on our noise score.

Which is more comfortable, Ecsta PS31 or Ecsta PS91?

Kumho Ecsta PS31, 65 vs 54 on our comfort score.

Which lasts longer, Ecsta PS31 or Ecsta PS91?

Kumho Ecsta PS31, 65 vs 44 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