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Kumho Ecsta PS91 vs Pirelli P Zero Nero All Season Run Flat — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 6 + 0 road tests and 485 + 37 owner reviews. How we score

Too close to call: Ecsta PS91 59, P Zero Nero All Season Run Flat 60.

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Kumho Ecsta PS91
Tire AKumho

Ecsta PS91

Summer

Tests 77 · 6 tests Owners 46 · 485 reviews

Best test result: #1 of 11 in 2023 Sport Auto UHP Tyre Test (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. 68

    Dry

    Ecsta PS91 +4
    64
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score) · 6 / – tests76≈ 66 (est.)
    Reviews found online5763

    Ecsta PS91: 60% × 76.5 + 40% × 56.5 = 68

    P Zero Nero All Season Run Flat: 60% × 65.7 (est.) + 40% × 62.6 = 64

    No road tests of dry for P Zero Nero All Season Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 69

    Wet

    Ecsta PS91 +5
    64
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score) · 6 / – tests78≈ 65 (est.)
    Reviews found online5562

    Ecsta PS91: 60% × 78.4 + 40% × 55.3 = 69

    P Zero Nero All Season Run Flat: 60% × 65.2 (est.) + 40% × 61.5 = 64

    No road tests of wet for P Zero Nero All Season Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 37

    Snow

    P Zero Nero All Season Run Flat +23
    60
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score)≈ 52 (est.)≈ 65 (est.)
    Reviews found online1454

    Ecsta PS91: 60% × 51.5 (est.) + 40% × 14.3 = 37

    P Zero Nero All Season Run Flat: 60% × 64.6 (est.) + 40% × 53.8 = 60

    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 0.33).

    No road tests of snow for P Zero Nero All Season Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 61

    Comfort

    Ecsta PS91 +7
    54
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score)≈ 66 (est.)≈ 64 (est.)
    Reviews found online5239

    Ecsta PS91: 60% × 66.2 (est.) + 40% × 52.3 = 61

    P Zero Nero All Season Run Flat: 60% × 63.8 (est.) + 40% × 38.5 = 54

    No road tests of comfort for Ecsta PS91 or P Zero Nero All Season Run Flat. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 64

    Noise

    Ecsta PS91 +7
    57
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score) · 3 / – tests70≈ 67 (est.)
    Reviews found online5542

    Ecsta PS91: 60% × 70.2 + 40% × 54.7 = 64

    P Zero Nero All Season Run Flat: 60% × 67.3 (est.) + 40% × 41.7 = 57

    No road tests of noise for P Zero Nero All Season Run Flat. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 48

    Treadwear

    P Zero Nero All Season Run Flat +8
    56
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Professional tests (TWG score)≈ 57 (est.)≈ 61 (est.)
    Reviews found online3650

    Ecsta PS91: 60% × 56.6 (est.) + 40% × 36.2 = 48

    P Zero Nero All Season Run Flat: 60% × 60.8 (est.) + 40% × 49.9 = 56

    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 0.31).

    No road tests of treadwear for P Zero Nero All Season Run Flat. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 57

    Handling (owners)

    Ecsta PS91 +10
    47
    Why this score
    SourceEcsta PS91P Zero Nero All Season Run Flat
    Reviews found online5747
Scores at a glance
CategoryKumho Ecsta PS91Pirelli P Zero Nero All Season Run Flat
Relative Score 59 60
Dry 68 64
Wet 69 64
Snow 37 60
Comfort 61 54
Noise 64 57
Treadwear 48 56
Handling (owners) 57 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.

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Neutral
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Less important
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Neutral
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Recomputed
Headline score

Ecsta PS91

P Zero Nero All Season Run Flat

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A 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

Tire B P Zero Nero All Season Run Flat

Not enough owner reviews yet to extract themes.

What real owners are saying

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

Tire A

Kumho Ecsta PS91

Mixed

The Kumho Ecsta PS91 is widely praised as an affordable, budget-friendly summer tire with attractive styling and respectable wet or daily street performance compared to pricier rivals like Michelin. However, several users express frustration with poor tread life, rapid wear, and insufficient grip or heat endurance under hard driving and track conditions. Others also note issues with sketchy handling, flat-spotting, or vibration when cold.

r/G37 ·30 upvotes ·2026-03-21

“275/40 Square Can Fit on a Sedan Shout out to TireRack for having great information on actual tire size. Ecsta PS91 265/40 and ExtremeContact 275/40 has a tread width and section width difference of 0.1” and 0.2” respectively. Tires fit just about perfect. No rubbing so far, and don’t expect it to rub bc of the relatively minimal width change Really goes to show that tire brand matters for fitment Read more”
r/Wheels ·2020-10-06

“90% used Michelin super sports or New Kumho ecsta ps91. I am juggling between either getting a set of used 90% tread Michelin pss or 4s... or getting some new kumho ecsta ps91s. I’ve always thought Michelin had the best ride and profile appearance even in a high end sport tire but of course the price. If I go used they are about the same price as a set of new kumho. I have never tried the ps91 but they look like Michelin’s even the recessed rim guard looks similar and many reviews say performance and ride is similar.”
mbworld.org

“Iv gone threw so many tires and just a heads up... I will never get any other tire for the street other than a pss. smooth as silk all the way up to 160mph and redic grip in the corners for a street tire”
Top themes
#budget performance value#rapid tread wear#wet and dry traction#track and heat limitations#ride quality and appearance#Michelin alternative comparison

Based on 45 community posts

Tire B

Pirelli P Zero Nero All Season Run Flat

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

Specs side by side

Attribute A · Kumho Ecsta PS91 B · Pirelli P Zero Nero All Season Run Flat
CategorySummerAll-Season tire
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Tread depth9.5/32″—
UTQG260 A A—
SidewallBlackwall—
Max pressure50 psi—

Which one should you actually buy?

Kumho Ecsta PS91

Pirelli P Zero Nero All Season Run Flat

Too close to call: Kumho Ecsta PS91 and Pirelli P Zero Nero All Season Run Flat are within 2 points overall. Kumho Ecsta PS91 is stronger on handling, comfort and noise. Pirelli P Zero Nero All Season Run Flat is stronger on snow and treadwear.

Pick tire B You drive through snowy winters

Pirelli P Zero Nero All Season Run Flat scores 60 vs 37 on snow.

Pick tire A You enjoy sharp, responsive handling

Kumho Ecsta PS91 scores 57 vs 47 on handling.

Pick tire B You want the longest tread life

Pirelli P Zero Nero All Season Run Flat scores 56 vs 48 on treadwear.

Pick tire A You want the most comfortable ride

Kumho Ecsta PS91 scores 61 vs 54 on comfort.

Tire A · Kumho Ecsta PS91
Check price on Amazon
Tire B · Pirelli P Zero Nero All Season Run Flat
Check price on Amazon

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Ecsta PS91 or P Zero Nero All Season Run Flat?

Which is better in the wet, Ecsta PS91 or P Zero Nero All Season Run Flat?

Kumho Ecsta PS91, 69 vs 64 on our wet score.

Which grips better on dry roads, Ecsta PS91 or P Zero Nero All Season Run Flat?

Kumho Ecsta PS91, 68 vs 64 on our dry score.

Which is better in snow, Ecsta PS91 or P Zero Nero All Season Run Flat?

Pirelli P Zero Nero All Season Run Flat, 60 vs 37 on our snow score.

Which is quieter, Ecsta PS91 or P Zero Nero All Season Run Flat?

Kumho Ecsta PS91, 64 vs 57 on our noise score.

Which is more comfortable, Ecsta PS91 or P Zero Nero All Season Run Flat?

Kumho Ecsta PS91, 61 vs 54 on our comfort score.

Which lasts longer, Ecsta PS91 or P Zero Nero All Season Run Flat?

Pirelli P Zero Nero All Season Run Flat, 56 vs 48 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