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Kumho Solus HS51 Harmony Sports looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.

Head-to-head Updated

Kumho Solus HS51 Harmony Sports vs Yokohama BluEarth Es ES32 — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 1 + 0 road tests and 5 + 60 owner reviews. How we score

BluEarth Es ES32 leads, 70–67 Narrow edge

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Kumho Solus HS51 Harmony Sports
Tire AKumho

Solus HS51 Harmony Sports

Summer

Provisional

Tests 68 · 1 test Owners 67 · 5 reviews

Best test result: #1 of 10 in 2020 Teknikens 17 Inch Summer Tyre Test (straight aquaplaning)

Category by category

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

  1. 66

    Dry

    BluEarth Es ES32 +4
    70
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth Es ES32
    Professional tests (TWG score) · 1 / – tests65≈ 69 (est.)
    Reviews found online6671

    Solus HS51 Harmony Sports: 60% × 65.4 + 40% × 65.8 = 66

    BluEarth Es ES32: 60% × 68.9 (est.) + 40% × 70.6 = 70

    No road tests of dry for BluEarth Es ES32. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 73

    Wet

    Solus HS51 Harmony Sports +1
    72
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth Es ES32
    Professional tests (TWG score) · 1 / – tests75≈ 71 (est.)
    Reviews found online7073

    Solus HS51 Harmony Sports: 60% × 75.3 + 40% × 70.4 = 73

    BluEarth Es ES32: 60% × 71.3 (est.) + 40% × 72.5 = 72

    No road tests of wet for BluEarth Es ES32. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).

  3. 59

    Comfort

    BluEarth Es ES32 +13
    72
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth Es ES32
    Professional tests (TWG score) · 1 / – tests51≈ 70 (est.)
    Reviews found online7174

    Solus HS51 Harmony Sports: 60% × 51 + 40% × 70.7 = 59

    BluEarth Es ES32: 60% × 70 (est.) + 40% × 74.3 = 72

    No road tests of comfort for BluEarth Es ES32. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  4. 66

    Treadwear

    Solus HS51 Harmony Sports +1
    65
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth Es ES32
    Professional tests (TWG score)≈ 66 (est.)≈ 65 (est.)
    Reviews found online6665

    Solus HS51 Harmony Sports: 60% × 65.7 (est.) + 40% × 65.9 = 66

    BluEarth Es ES32: 60% × 65.3 (est.) + 40% × 64.6 = 65

    No road tests of treadwear for Solus HS51 Harmony Sports. 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 BluEarth Es ES32. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  5. 61

    Handling (owners)

    BluEarth Es ES32 +12
    73
    Why this score
    SourceSolus HS51 Harmony SportsBluEarth Es ES32
    Reviews found online6173
Scores at a glance
CategoryKumho Solus HS51 Harmony SportsYokohama BluEarth Es ES32
Relative Score 67 70
Dry 66 70
Wet 73 72
Comfort 59 72
Treadwear 66 65
Handling (owners) 61 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
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
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Recomputed
Headline score

Solus HS51 Harmony Sports

BluEarth Es ES32

Pros, cons & observations

Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.

Tire A Solus HS51 Harmony Sports

Pros

  • High level of ride comfort and low noise levels
  • Excellent value for money compared to premium brands
  • Strong wet weather performance

Cons

  • Excessive sidewall softness leading to a 'wobbling' or unstable sensation
  • Noticeable decline in grip levels before the tread is fully worn
  • Inconsistent handling performance depending on axle placement
All owner themes in the Solus HS51 Harmony Sports review

Tire B BluEarth Es ES32

Pros

  • Exceptional ride comfort and noise reduction
  • Strong value proposition compared to premium brands
  • Reliable dry-weather traction and handling

Cons

  • Wet-weather grip can become unpredictable as tread depth decreases
  • Inconsistent tread life, with some users reporting premature wear
  • Sidewalls may be susceptible to damage from severe potholes
All owner themes in the BluEarth Es ES32 review

Specs side by side

Attribute A · Kumho Solus HS51 Harmony Sports B · Yokohama BluEarth Es ES32
CategorySummerSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available—64
Rim diameters—13″ – 18″

Which one should you actually buy?

Kumho Solus HS51 Harmony Sports

Yokohama BluEarth Es ES32

Narrow edge: Yokohama BluEarth Es ES32 — better comfort, handling and dry. Where the Kumho Solus HS51 Harmony Sports is ahead, it is by less than 3 points. Kumho Solus HS51 Harmony Sports rests on little evidence so far (1 test, 5 reviews), so read this result as provisional.

Pick tire B You want the most comfortable ride

Yokohama BluEarth Es ES32 scores 72 vs 59 on comfort.

Pick tire B You enjoy sharp, responsive handling

Yokohama BluEarth Es ES32 scores 73 vs 61 on handling.

Pick tire B You want the most grip on dry roads

Yokohama BluEarth Es ES32 scores 70 vs 66 on dry.

Tire A · Kumho Solus HS51 Harmony Sports
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Tire B · Yokohama BluEarth Es ES32
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Solus HS51 Harmony Sports or BluEarth Es ES32?

Which is better in the wet, Solus HS51 Harmony Sports or BluEarth Es ES32?

Neither, by our numbers: 73 vs 72 on the wet score, within 3 points.

Which grips better on dry roads, Solus HS51 Harmony Sports or BluEarth Es ES32?

Yokohama BluEarth Es ES32, 70 vs 66 on our dry score.

Which is more comfortable, Solus HS51 Harmony Sports or BluEarth Es ES32?

Yokohama BluEarth Es ES32, 72 vs 59 on our comfort score.

Which lasts longer, Solus HS51 Harmony Sports or BluEarth Es ES32?

Neither, by our numbers: 66 vs 65 on the treadwear score, within 3 points.

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