tirewheelguide

Toyo Proxes RA1 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Kumho Ecsta PS91 vs Toyo Proxes RA1 — 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 + 11 owner reviews. How we score

Proxes RA1 is ahead, 66–59

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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”

Toyo Proxes RA1
Tire BToyo

Proxes RA1

Summer Trackday and Competition tires

Provisional

Tests – · none yet Owners 65 · 11 reviews

Category by category

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

  1. 68

    Dry

    Proxes RA1 +7
    75
    Why this score
    SourceEcsta PS91Proxes RA1
    Professional tests (TWG score) · 6 / – tests76≈ 72 (est.)
    Reviews found online5779

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

    Proxes RA1: 60% × 72.1 (est.) + 40% × 78.5 = 75

    No road tests of dry for Proxes RA1. 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 PS91Proxes RA1
    Professional tests (TWG score) · 6 / – tests78≈ 65 (est.)
    Reviews found online5561

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

    Proxes RA1: 60% × 65 (est.) + 40% × 61.3 = 64

    No road tests of wet for Proxes RA1. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 37

    Snow

    Proxes RA1 +12
    49
    Why this score
    SourceEcsta PS91Proxes RA1
    Professional tests (TWG score)≈ 52 (est.)≈ 58 (est.)
    Reviews found online1434

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

    Proxes RA1: 60% × 58.2 (est.) + 40% × 34.4 = 49

    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 Proxes RA1. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 61

    Comfort

    Proxes RA1 +6
    67
    Why this score
    SourceEcsta PS91Proxes RA1
    Professional tests (TWG score)≈ 66 (est.)≈ 69 (est.)
    Reviews found online5266

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

    Proxes RA1: 60% × 68.5 (est.) + 40% × 65.7 = 67

    No road tests of comfort for Ecsta PS91 or Proxes RA1. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 64

    Noise

    Proxes RA1 +4
    68
    Why this score
    SourceEcsta PS91Proxes RA1
    Professional tests (TWG score) · 3 / – tests70≈ 67 (est.)
    Reviews found online5570

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

    Proxes RA1: 60% × 67.3 (est.) + 40% × 70.1 = 68

    No road tests of noise for Proxes RA1. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.

  6. 48

    Treadwear

    Proxes RA1 +19
    67
    Why this score
    SourceEcsta PS91Proxes RA1
    Professional tests (TWG score)≈ 57 (est.)≈ 66 (est.)
    Reviews found online3668

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

    Proxes RA1: 60% × 66.2 (est.) + 40% × 67.6 = 67

    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 Proxes RA1. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  7. 57

    Handling (owners)

    Proxes RA1 +16
    73
    Why this score
    SourceEcsta PS91Proxes RA1
    Reviews found online5773
Scores at a glance
CategoryKumho Ecsta PS91Toyo Proxes RA1
Relative Score 59 66
Dry 68 75
Wet 69 64
Snow 37 49
Comfort 61 67
Noise 64 68
Treadwear 48 67
Handling (owners) 57 73

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
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Neutral
NotLessNeutralImportantMost
Less important
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Recomputed
Headline score

Ecsta PS91

Proxes RA1

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 RA1

Pros

  • Exceptional dry grip that remains consistent even as the tread wears down.
  • Superior tire life compared to many other dedicated track-focused compounds.
  • Predictable breakaway characteristics that provide driver confidence at the limit.

Cons

  • Performance can become 'greasy' if the tire is overdriven or overheated during long sessions.
  • Requires proper heat cycling and break-in procedures to achieve optimal performance.
  • Sensitive to alignment settings, which can lead to accelerated or uneven wear if not managed.
All owner themes in the Proxes RA1 review

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

Toyo Proxes RA1

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

Specs side by side

Attribute A · Kumho Ecsta PS91 B · Toyo Proxes RA1
CategorySummerSummer Trackday and Competition tires
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available17
Rim diameters19″15″ – 18″
Tread depth9.5/32″8/32″
UTQG260 A A100 AA A
SidewallBlackwallBlack Side Wall
Max pressure50 psi44 psi

Which one should you actually buy?

Kumho Ecsta PS91

Toyo Proxes RA1

Winner: Toyo Proxes RA1 — better treadwear, handling and snow. Pick the Kumho Ecsta PS91 if wet matters most to you. Toyo Proxes RA1 rests on little evidence so far (0 tests, 11 reviews), so read this result as provisional.

Pick tire B You want the longest tread life

Toyo Proxes RA1 scores 67 vs 48 on treadwear.

Pick tire B You enjoy sharp, responsive handling

Toyo Proxes RA1 scores 73 vs 57 on handling.

Pick tire B You drive through snowy winters

Toyo Proxes RA1 scores 49 vs 37 on snow.

Pick tire B You want the most grip on dry roads

Toyo Proxes RA1 scores 75 vs 68 on dry.

Tire A · Kumho Ecsta PS91
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Tire B · Toyo Proxes RA1
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Ecsta PS91 or Proxes RA1?

Which is better in the wet, Ecsta PS91 or Proxes RA1?

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

Which grips better on dry roads, Ecsta PS91 or Proxes RA1?

Toyo Proxes RA1, 75 vs 68 on our dry score.

Which is better in snow, Ecsta PS91 or Proxes RA1?

Toyo Proxes RA1, 49 vs 37 on our snow score.

Which is quieter, Ecsta PS91 or Proxes RA1?

Toyo Proxes RA1, 68 vs 64 on our noise score.

Which is more comfortable, Ecsta PS91 or Proxes RA1?

Toyo Proxes RA1, 67 vs 61 on our comfort score.

Which lasts longer, Ecsta PS91 or Proxes RA1?

Toyo Proxes RA1, 67 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