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Yokohama S306 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Kumho Solus HA31 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 2 + 0 road tests and 18 + 17 owner reviews. How we score

Solus HA31 is ahead, 74–58

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Kumho Solus HA31
Tire AKumho

Solus HA31

All Season

± 7

Tests 70 · 2 tests Owners 77 · 18 reviews

Best test result: #3 of 10 in 2019 Auto Bild All Season Tyre Test (noise)

Yokohama S306
Tire BYokohama

S306

Summer

± 8Provisional

Tests – · none yet Owners 54 · 17 reviews

Category by category

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

  1. 69

    Dry

    Solus HA31 +8
    61
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 2 / – tests64≈ 63 (est.)
    Reviews found online7857

    Solus HA31: 60% × 63.6 + 40% × 77.6 = 69

    S306: 60% × 63.3 (est.) + 40% × 56.6 = 61

    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).

  2. 79

    Wet

    Solus HA31 +23
    56
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 2 / – tests76≈ 60 (est.)
    Reviews found online8351

    Solus HA31: 60% × 75.8 + 40% × 83.4 = 79

    S306: 60% × 60 (est.) + 40% × 50.9 = 56

    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).

  3. 71

    Snow

    No comparison
    –
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 1 / – tests66–
    Reviews found online80–

    Solus HA31: 60% × 65.7 + 40% × 79.7 = 71

  4. 73

    Comfort

    Solus HA31 +18
    55
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score)≈ 70 (est.)≈ 65 (est.)
    Reviews found online7648

    Solus HA31: 40% × 70.3 (est.) + 60% × 75.5 = 73

    S306: 40% × 65.3 (est.) + 60% × 47.6 = 55

    No road tests of comfort for Solus HA31 or S306. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 72

    Noise

    No comparison
    –
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 1 / – tests72–
    Reviews found online73–

    Solus HA31: 60% × 72.4 + 40% × 72.6 = 72

  6. 72

    Treadwear

    Solus HA31 +11
    61
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 1 / – tests72≈ 63 (est.)
    Reviews found online7257

    Solus HA31: 60% × 71.8 + 40% × 72 = 72

    S306: 60% × 63.2 (est.) + 40% × 57 = 61

    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).

  7. 78

    Handling (owners)

    Solus HA31 +29
    49
    Why this score
    SourceSolus HA31S306
    Reviews found online7849
  8. 63

    Efficiency

    No comparison
    –
    Why this score
    SourceSolus HA31S306
    Professional tests (TWG score) · 1 / – tests63–
Scores at a glance
CategoryKumho Solus HA31Yokohama S306
Relative Score 74 58
Dry 69 61
Wet 79 56
Snow 71 –
Comfort 73 55
Noise 72 –
Treadwear 72 61
Handling (owners) 78 49
Efficiency 63 –

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
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

Solus HA31

± 8

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 Solus HA31

Pros

  • Excellent snow and winter weather traction
  • Strong grip and stability on wet and dry roads
  • High value and competitive pricing compared to premium brands

Cons

  • Higher than average road noise, particularly at highway speeds
  • Tires can feel slightly soft in warmer weather conditions
  • Mixed feedback regarding dry performance compared to dedicated summer options
All owner themes in the Solus HA31 review

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
All owner themes in the S306 review

Specs side by side

Attribute A · Kumho Solus HA31 B · Yokohama S306
CategoryAll SeasonSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available29—
Rim diameters13″ – 18″—
Tread depth10/32″—
UTQG420 A A—
SidewallBlackwall—
Max pressure50 psi—

Which one should you actually buy?

Kumho Solus HA31

Yokohama S306

Winner: Kumho Solus HA31 — better handling, wet and comfort. It leads or ties in every category we score. Yokohama S306 rests on little evidence so far (0 tests, 17 reviews), so read this result as provisional.

Pick tire A You enjoy sharp, responsive handling

Kumho Solus HA31 scores 78 vs 49 on handling.

Pick tire A Your priority is wet-weather safety

Kumho Solus HA31 scores 79 vs 56 on wet.

Pick tire A You want the most comfortable ride

Kumho Solus HA31 scores 73 vs 55 on comfort.

Pick tire A You want the longest tread life

Kumho Solus HA31 scores 72 vs 61 on treadwear.

Tire A · Kumho Solus HA31
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Tire B · Yokohama S306
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Solus HA31 or S306?

Which is better in the wet, Solus HA31 or S306?

Kumho Solus HA31, 79 vs 56 on our wet score.

Which grips better on dry roads, Solus HA31 or S306?

Kumho Solus HA31, 69 vs 61 on our dry score.

Which is more comfortable, Solus HA31 or S306?

Kumho Solus HA31, 73 vs 55 on our comfort score.

Which lasts longer, Solus HA31 or S306?

Kumho Solus HA31, 72 vs 61 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