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Head-to-head Updated

Bridgestone Potenza S001 vs Kumho Ecsta PS31 — 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 6 + 0 road tests and 5,811 + 259 owner reviews. How we score

Ecsta PS31 leads, 65–63 Narrow edge

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Bridgestone Potenza S001
Tire ABridgestone

Potenza S001

Summer

± 7

Tests 72 · 6 tests Owners 52 · 5,811 reviews

Best test result: #1 of 20 in 2020 Auto Bild Summer Tyre Test (wet braking)

“Had a set of run flats for a brief period, heavy tires, very stiff sidewalls, wouldn't run them again.. .”

Kumho Ecsta PS31
Tire BKumho

Ecsta PS31

Summer

± 7

Tests – · none yet Owners 63 · 259 reviews

Category by category

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

  1. 72

    Dry

    Potenza S001 +9
    63
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 4 / – tests79≈ 65 (est.)
    Reviews found online6060

    Potenza S001: 60% × 79.4 + 40% × 60 = 72

    Ecsta PS31: 60% × 64.9 (est.) + 40% × 60.4 = 63

    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 0.42).

  2. 75

    Wet

    Potenza S001 +6
    69
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 4 / – tests86≈ 69 (est.)
    Reviews found online6068

    Potenza S001: 60% × 85.5 + 40% × 60 = 75

    Ecsta PS31: 60% × 69.2 (est.) + 40% × 68 = 69

    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. 50

    Snow

    Ecsta PS31 +8
    58
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score)≈ 58 (est.)≈ 63 (est.)
    Reviews found online3850

    Potenza S001: 60% × 58.4 (est.) + 40% × 37.6 = 50

    Ecsta PS31: 60% × 62.9 (est.) + 40% × 49.8 = 58

    No road tests of snow for Potenza S001. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).

    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 0.37).

  4. 54

    Comfort

    Ecsta PS31 +12
    66
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 1 / – tests63≈ 68 (est.)
    Reviews found online4765

    Potenza S001: 40% × 63.3 + 60% × 47.2 = 54

    Ecsta PS31: 40% × 68.3 (est.) + 60% × 64.6 = 66

    No road tests of comfort for Ecsta PS31. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 56

    Noise

    Ecsta PS31 +11
    67
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 3 / – tests56≈ 67 (est.)
    Reviews found online5667

    Potenza S001: 60% × 55.7 + 40% × 55.8 = 56

    Ecsta PS31: 60% × 66.6 (est.) + 40% × 66.6 = 67

    No road tests of noise for Ecsta PS31. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 52

    Treadwear

    Ecsta PS31 +13
    65
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 3 / – tests58≈ 66 (est.)
    Reviews found online4365

    Potenza S001: 60% × 58 + 40% × 42.7 = 52

    Ecsta PS31: 60% × 65.7 (est.) + 40% × 64.8 = 65

    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 0.35).

  7. 60

    Handling (owners)

    Ecsta PS31 +9
    69
    Why this score
    SourcePotenza S001Ecsta PS31
    Reviews found online6069
  8. 41

    Efficiency

    No comparison
    –
    Why this score
    SourcePotenza S001Ecsta PS31
    Professional tests (TWG score) · 3 / – tests41–
Scores at a glance
CategoryBridgestone Potenza S001Kumho Ecsta PS31
Relative Score 63 65
Dry 72 63
Wet 75 69
Snow 50 58
Comfort 54 66
Noise 56 67
Treadwear 52 65
Handling (owners) 60 69
Efficiency 41 –

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

Potenza S001

± 7

Ecsta PS31

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 Potenza S001

Pros

  • Precise and sharp steering response
  • Strong dry-pavement cornering grip
  • Stiff sidewalls providing robust rim protection and high-speed stability

Cons

  • High levels of road noise and cabin drone
  • Stiff, harsh ride quality (particularly noticeable on run-flat versions)
  • Poor or unpredictable wet-weather grip and sudden loss of traction
All owner themes in the Potenza S001 review

Tire B 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

What real owners are saying

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

Tire A

Bridgestone Potenza S001

Mixed

Community sentiment regarding the Bridgestone Potenza S001 is predominantly mixed to negative, particularly concerning the run-flat variants. Drivers frequently report stiff sidewalls, harsh ride quality, road noise, premature wear, and tread cracking, leading many to switch to non-run-flat alternatives like Michelin. However, several owners find them adequate for spirited driving, citing satisfactory dry and wet grip as well as acceptable ride comfort on specific vehicle setups.

r/Miata ·2022-03-30

“Potenza S001 cracking Has anyone had issues with their OEM Bridgestone Potenza S001 tires cracking? I have OEM tires on my 2018 CLub with 17k miles with cracking in the treads for all 4 tires and because they are 4 years + 3 months past manufacture date, Bridgestone told me to Beat It. These are $185 tires that don't last 4 seasons....why would I ever buy them if they are PoS?”
r/BMWi3 ·1 upvote ·2024-01-09

“I put the Potenza S001 tires on the rear of my i3s with that Tire Rack deal but I didn't think they would fit on the 5.5 inch rims. I think the rears are 6.0".”
r/TyreReviews ·3 upvotes ·2026-02-22

“Replacing Bridgestone Potenza s001 RunFlats with Primacy 5 vs. PS5. Suggestions? I drive a VW Jetta which only has 160 Hp. I do occasionally really enjoy some spirited driving or taking aggressive turns. My considerations are that I do really care about Comfort and road noise and so that leads me towards the Primacy 5. At the same time, I don't think the power of my car justifies the PS5. My question is basically, I've online that for runflats to be runflats they have really stiff sidewalls, which might be contributing to the current feel of my car and I wonder if, even though everything else about the Potenza s001 is quite worse compared to the Primacy 5, I wonder if I will miss the stiff sidewall? And just because of that should I consider the PS5?”
Top themes
#run-flat stiffness and harshness#premature tread wear#tread cracking issues#wet and dry grip#switching to non-run-flats#road noise generation#OEM tire replacement

Based on 43 community posts

Tire B

Kumho Ecsta PS31

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

Specs side by side

Attribute A · Bridgestone Potenza S001 B · Kumho Ecsta PS31
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available5521
Rim diameters15″ – 21″15″ – 18″
Tread depth8/32″10/32″
UTQG280 A A460 A A
SidewallBlackwallBlackwall
Max pressure50 psi51 psi
Sizes in common99

Which one should you actually buy?

Bridgestone Potenza S001

Kumho Ecsta PS31

Narrow edge: Kumho Ecsta PS31 — better treadwear, comfort and noise. Pick the Bridgestone Potenza S001 if dry and wet matter most to you.

Pick tire B You want the longest tread life

Kumho Ecsta PS31 scores 65 vs 52 on treadwear.

Pick tire B You want the most comfortable ride

Kumho Ecsta PS31 scores 66 vs 54 on comfort.

Pick tire B You want a quieter cabin

Kumho Ecsta PS31 scores 67 vs 56 on noise.

Pick tire A You want the most grip on dry roads

Bridgestone Potenza S001 scores 72 vs 63 on dry.

Tire A · Bridgestone Potenza S001
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Tire B · Kumho Ecsta PS31
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Potenza S001 or Ecsta PS31?

Which is better in the wet, Potenza S001 or Ecsta PS31?

Bridgestone Potenza S001, 75 vs 69 on our wet score.

Which grips better on dry roads, Potenza S001 or Ecsta PS31?

Bridgestone Potenza S001, 72 vs 63 on our dry score.

Which is better in snow, Potenza S001 or Ecsta PS31?

Kumho Ecsta PS31, 58 vs 50 on our snow score.

Which is quieter, Potenza S001 or Ecsta PS31?

Kumho Ecsta PS31, 67 vs 56 on our noise score.

Which is more comfortable, Potenza S001 or Ecsta PS31?

Kumho Ecsta PS31, 66 vs 54 on our comfort score.

Which lasts longer, Potenza S001 or Ecsta PS31?

Kumho Ecsta PS31, 65 vs 52 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