Tests – · none yet Owners 47 · 75 reviews
Yokohama S306 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Bridgestone Ecopia EP150 vs Yokohama S306 — 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 0 + 0 road tests and 75 + 17 owner reviews. How we score
S306 leads, 58–55 Narrow edge
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Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
54
Dry
S306 +761Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 59 (est.) ≈ 63 (est.) Reviews found online 46 57 Ecopia EP150: 60% × 59.1 (est.) + 40% × 46.3 = 54
S306: 60% × 63.3 (est.) + 40% × 56.6 = 61
No road tests of dry for Ecopia EP150. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
No road tests of dry for S306. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
58
Wet
Ecopia EP150 +256Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 61 (est.) ≈ 60 (est.) Reviews found online 53 51 Ecopia EP150: 60% × 61 (est.) + 40% × 52.7 = 58
S306: 60% × 60 (est.) + 40% × 50.9 = 56
No road tests of wet for Ecopia EP150. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
No road tests of wet for S306. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.54).
-
48
Snow
No comparison–Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 58 (est.) – Reviews found online 33 – Ecopia EP150: 60% × 58.4 (est.) + 40% × 33.1 = 48
No road tests of snow for Ecopia EP150. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
-
55
Comfort
Level55Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 65 (est.) ≈ 65 (est.) Reviews found online 47 48 Ecopia EP150: 40% × 65.2 (est.) + 60% × 47.4 = 55
S306: 40% × 65.3 (est.) + 60% × 47.6 = 55
No road tests of comfort for Ecopia EP150 or S306. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
60
Noise
No comparison–Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 49 – Ecopia EP150: 60% × 66.5 (est.) + 40% × 49.4 = 60
No road tests of noise for Ecopia EP150. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
55
Treadwear
S306 +661Why this score
Source Ecopia EP150 S306 Professional tests (TWG score) ≈ 60 (est.) ≈ 63 (est.) Reviews found online 48 57 Ecopia EP150: 60% × 59.9 (est.) + 40% × 47.5 = 55
S306: 60% × 63.2 (est.) + 40% × 57 = 61
No road tests of treadwear for Ecopia EP150. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
No road tests of treadwear for S306. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
50
Handling (owners)
Ecopia EP150 +149Why this score
Source Ecopia EP150 S306 Reviews found online 50 49
Scores at a glance
| Category | Bridgestone Ecopia EP150 | Yokohama S306 |
|---|---|---|
| Relative Score | 55 | 58 |
| Dry | 54 | 61 |
| Wet | 58 | 56 |
| Snow | 48 | – |
| Comfort | 55 | 55 |
| Noise | 60 | – |
| Treadwear | 55 | 61 |
| Handling (owners) | 50 | 49 |
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
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
55
/ 100
Ecopia EP150
58
/ 100
S306
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 Ecopia EP150
Pros
- High level of ride comfort and low-speed smoothness
- Generally durable construction capable of handling potholes
- Satisfactory dry-road handling for casual, daily driving
Cons
- Frequently cited as dangerous or unpredictable in wet conditions
- Noticeable increase in road noise as the tire ages
- Inconsistent tread wear, with some users reporting premature failure
Tire B S306
Pros
- Excellent dry weather grip and handling
- High tread longevity and durability
- Stiff sidewall provides good steering feedback
Cons
- Consistently poor wet weather traction
- Harsh ride quality and high road noise
- Tendency to tramline on uneven surfaces
Specs side by side
| Attribute | A · Bridgestone Ecopia EP150 | B · Yokohama S306 |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 24 | — |
| Rim diameters | 13″ – 17″ | — |
| UTQG | 200 B B | — |
| Sidewall | Blackwall | — |
Which one should you actually buy?
55
/ 100
Bridgestone Ecopia EP150
58
/ 100
Yokohama S306
Narrow edge: Yokohama S306 — better dry and treadwear. Where the Bridgestone Ecopia EP150 is ahead, it is by less than 3 points. Yokohama S306 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.
Pick tire B
You want the most grip on dry roads
Yokohama S306 scores 61 vs 54 on dry.
Pick tire B
You want the longest tread life
Yokohama S306 scores 61 vs 55 on treadwear.
Tire A · Bridgestone Ecopia EP150
Tire B · Yokohama S306
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Ecopia EP150 or S306?
Which is better in the wet, Ecopia EP150 or S306?
Neither, by our numbers: 58 vs 56 on the wet score, within 3 points.
Which grips better on dry roads, Ecopia EP150 or S306?
Yokohama S306, 61 vs 54 on our dry score.
Which is more comfortable, Ecopia EP150 or S306?
Neither, by our numbers: 55 vs 55 on the comfort score, within 3 points.
Which lasts longer, Ecopia EP150 or S306?
Yokohama S306, 61 vs 55 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