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Head-to-head Updated

Kumho Ecsta PS91 vs Toyo Proxes R888 — Compared

Relative Score (0–100): 60% professional tests, 40% owner reviews.

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Tire AKumho

Ecsta PS91

Summer

Tests 76 · 6 tests Owners 47 · 485 reviews

“no more Kumho Ecsta PS91 for me I have 2015 Mustang GT Premium with 20" wheels. I bought the car new, and it has just over 155k, and the only thing I have replaced is the water pump. However, tire wear is a problem. The alignment is good, and I had the camber adjusted (front and rear) so that the tire has less negative camber than it had when it left the factory. Despite that, I'm only getting about 15k miles out of a set, and I drive it very gently. I've been buying Kumho Ecsta PS91, but I'd like to try something different. What do you recommend?”

Category by category

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

  1. 68

    Dry

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Professional tests (TWG score)75–
    Reviews found online57–
  2. 68

    Wet

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Professional tests (TWG score)77–
    Reviews found online55–
  3. 38

    Snow

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Reviews found online17–
  4. 61

    Comfort

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Reviews found online53–
  5. 67

    Noise

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Professional tests (TWG score)76–
    Reviews found online54–
  6. 49

    Treadwear

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Reviews found online37–
  7. 57

    Handling

    No comparison
    –
    Why this score
    SourceEcsta PS91Proxes R888
    Reviews found online57–
Scores at a glance
CategoryKumho Ecsta PS91Toyo Proxes R888
Relative Score 59 –
Dry 68 –
Wet 68 –
Snow 38 –
Comfort 61 –
Noise 67 –
Treadwear 49 –
Handling 57 –

Higher is better. The Relative Score follows your weights below; category scores do not change.

Weight the categories that matter to you

Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

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Neutral
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Neutral
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Recomputed
Headline score

Ecsta PS91

Proxes R888

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 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 Proxes R888

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

Community opinion on the Kumho Ecsta PS91 is generally mixed, praising them as a budget-friendly, good-looking max performance summer tire that rivals premium brands in daily driving comfort and appearance. However, multiple users note concerns regarding rapid tread wear, poor heat capacity under track conditions, and susceptibility to degrading under hard abuse compared to dedicated 200 treadwear or extreme performance tires.

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.”
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/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”
Top themes
#budget friendly performance#ride quality and comfort#tread wear longevity#track and heat performance#tire mixing risks#fitment and appearance

Based on 16 community posts

Tire B

Toyo Proxes R888

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

Specs side by side

Attribute A · Kumho Ecsta PS91 B · Toyo Proxes R888
CategorySummer—
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

Toyo Proxes R888

Only Kumho Ecsta PS91 has enough test and review data for a Relative Score, so there is no head-to-head winner yet.

Tire A · Kumho Ecsta PS91
Check price on Amazon
Tire B · Toyo Proxes R888
Check price on Amazon

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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.

Community buzz from Reddit and forums is shown for context only — it never changes the score.