Relative Score (0–100): 60% professional tests, 40% owner reviews.
Ecsta PS91 is ahead, 63–57
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Tests 77 · 6 tests Owners 55 · 472 reviews
“Follow up on new wheels/tires for ZHP Well new wheels and tires are on aswell as aligned. I love the tire and fitment setup but really do not like the gunmetal grey color especially on imola. I will feel it out for a while but probably eventually powder coat to OEM silver. Wheels specs are 18 x 8.5 x ET50 with 255/35/18 Kuhmo Ecsta PS91 all around. -2.5 camber in the front and -2.8 in the rear.”
Tests – · none yet Owners 52 · 18 reviews
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Professional tests (TWG score) | 77 | – |
| Reviews found online | 62 | 59 |
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Professional tests (TWG score) | 77 | – |
| Reviews found online | 60 | 55 |
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Reviews found online | 57 | 45 |
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Professional tests (TWG score) | 77 | – |
| Reviews found online | 55 | – |
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Reviews found online | 41 | 41 |
| Source | Ecsta PS91 | Potenza S007 |
|---|---|---|
| Reviews found online | 59 | 55 |
| Category | Kumho Ecsta PS91 | Bridgestone Potenza S007 |
|---|---|---|
| Relative Score | 63 | 57 |
| Dry | 71 | 62 |
| Wet | 70 | 59 |
| Comfort | 63 | 57 |
| Noise | 68 | – |
| Treadwear | 51 | 51 |
| Handling | 59 | 55 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.
Neither tire has a score here yet, so this weight changes nothing.
Ecsta PS91
Potenza S007
Only categories both tires have data for count toward the headline score.
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
From Reddit, forums and review threads. Not part of our score
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.
“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”
“New wheels and tires for my ZHP My old wheels were super beat up and tires were showing wire so I figured I’d upgrade both. Was able to get these freshly powder coated squared set (18/8.5/et 50). Im excited to feel the Kuhmo Ecsta PS91 as they are a budget friendly performance tire. 255/35/18 tires all around”
“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”
Based on 16 community posts
We haven't collected enough community discussion about this tire yet.
| Attribute | A · Kumho Ecsta PS91 | B · Bridgestone Potenza S007 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
Kumho Ecsta PS91
Bridgestone Potenza S007
Winner: Kumho Ecsta PS91 — better wet, dry and comfort. It leads or ties in every category we score.
Kumho Ecsta PS91 scores 70 vs 59 on wet.
Kumho Ecsta PS91 scores 71 vs 62 on dry.
Kumho Ecsta PS91 scores 63 vs 57 on comfort.
Kumho Ecsta PS91 scores 59 vs 55 on handling.
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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.
