tirewheelguide

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

Goodyear Assurance All-Season vs Kumho Solus HS51 Harmony Sports — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 1 road tests and 49 + 5 owner reviews. How we score

Solus HS51 Harmony Sports is ahead, 67–56

Check price on Amazon · Solus HS51 Harmony Sports or Assurance All-Season on Amazon
Add your size for an exact match
/R

Both Amazon links then search this exact size.

TireWheelGuide may earn a commission from purchases made through these links.

Kumho Solus HS51 Harmony Sports
Tire BKumho

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. 57

    Dry

    Solus HS51 Harmony Sports +9
    66
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 61 (est.)65
    Reviews found online5266

    Assurance All-Season: 60% × 61.2 (est.) + 40% × 51.5 = 57

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

    No road tests of dry for Assurance All-Season. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).

  2. 58

    Wet

    Solus HS51 Harmony Sports +15
    73
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 61 (est.)75
    Reviews found online5470

    Assurance All-Season: 60% × 61.1 (est.) + 40% × 54.2 = 58

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

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

  3. 51

    Snow

    No comparison
    –
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score)≈ 59 (est.)–
    Reviews found online38–

    Assurance All-Season: 60% × 59.2 (est.) + 40% × 37.6 = 51

    No road tests of snow for Assurance All-Season. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).

  4. 60

    Comfort

    Assurance All-Season +1
    59
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score) · – / 1 tests≈ 66 (est.)51
    Reviews found online5171

    Assurance All-Season: 60% × 65.9 (est.) + 40% × 50.7 = 60

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

    No road tests of comfort for Assurance All-Season. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.

  5. 64

    Noise

    No comparison
    –
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score)≈ 67 (est.)–
    Reviews found online59–

    Assurance All-Season: 60% × 67.3 (est.) + 40% × 59.1 = 64

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

  6. 53

    Treadwear

    Solus HS51 Harmony Sports +13
    66
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Professional tests (TWG score)≈ 59 (est.)≈ 66 (est.)
    Reviews found online4466

    Assurance All-Season: 60% × 59 (est.) + 40% × 44 = 53

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

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

  7. 48

    Handling (owners)

    Solus HS51 Harmony Sports +13
    61
    Why this score
    SourceAssurance All-SeasonSolus HS51 Harmony Sports
    Reviews found online4861
Scores at a glance
CategoryGoodyear Assurance All-SeasonKumho Solus HS51 Harmony Sports
Relative Score 56 67
Dry 57 66
Wet 58 73
Snow 51 –
Comfort 60 59
Noise 64 –
Treadwear 53 66
Handling (owners) 48 61

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

Assurance All-Season

Solus HS51 Harmony Sports

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 Assurance All-Season

Pros

  • High level of ride comfort and low road noise
  • Excellent value for the price point
  • Reliable dry and wet weather traction for non-aggressive drivers

Cons

  • Inconsistent tread life, with reports of premature wear well before the warranty limit
  • Poor performance in winter conditions, specifically on ice and deep snow
  • Occasional reports of vibration and balance issues immediately after installation
All owner themes in the Assurance All-Season review

Tire B 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

Specs side by side

Attribute A · Goodyear Assurance All-Season B · Kumho Solus HS51 Harmony Sports
CategoryAll-Season tireSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available51—
Rim diameters14″ – 20″—
Tread depth9/32″—
UTQG600 A B—
Treadwear warranty65,000 mi—
SidewallBlackwall—
Max pressure51 psi—

Which one should you actually buy?

Goodyear Assurance All-Season

Kumho Solus HS51 Harmony Sports

Winner: Kumho Solus HS51 Harmony Sports — better wet, treadwear and handling. Where the Goodyear Assurance All-Season 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 Your priority is wet-weather safety

Kumho Solus HS51 Harmony Sports scores 73 vs 58 on wet.

Pick tire B You want the longest tread life

Kumho Solus HS51 Harmony Sports scores 66 vs 53 on treadwear.

Pick tire B You enjoy sharp, responsive handling

Kumho Solus HS51 Harmony Sports scores 61 vs 48 on handling.

Pick tire B You want the most grip on dry roads

Kumho Solus HS51 Harmony Sports scores 66 vs 57 on dry.

Tire A · Goodyear Assurance All-Season
Check price on Amazon
Tire B · Kumho Solus HS51 Harmony Sports
Check price on Amazon

TireWheelGuide may earn a commission from purchases made through these links.

Assurance All-Season or Solus HS51 Harmony Sports?

Which is better in the wet, Assurance All-Season or Solus HS51 Harmony Sports?

Kumho Solus HS51 Harmony Sports, 73 vs 58 on our wet score.

Which grips better on dry roads, Assurance All-Season or Solus HS51 Harmony Sports?

Kumho Solus HS51 Harmony Sports, 66 vs 57 on our dry score.

Which is more comfortable, Assurance All-Season or Solus HS51 Harmony Sports?

Neither, by our numbers: 60 vs 59 on the comfort score, within 3 points.

Which lasts longer, Assurance All-Season or Solus HS51 Harmony Sports?

Kumho Solus HS51 Harmony Sports, 66 vs 53 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