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 Pirelli Powergy — Compared

Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 1 + 1 road tests and 5 + 1,807 owner reviews. How we score

Too close to call: Solus HS51 Harmony Sports 67, Powergy 68.

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Kumho Solus HS51 Harmony Sports
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)

Pirelli Powergy
Tire BPirelli

Powergy

Summer

Tests 76 · 1 test Owners 61 · 1,807 reviews

Best test result: #1 of 10 in 2026 autozurnal Eco Summer Tyre Test (noise)

“Ripples in side wall Just been washing the car and found what I can only describe as ripples in the side wall of my front-right tyre. Had these fitted in June, only just noticed the ripples. The other tyres are perfect. I’ve probably done around 2,000 miles on them. Should I be concerned, and do they look like a manufacturing defect, or as a result of damage? (I’ve not hit any serious potholes that I’m aware of). These tyres are Pirelli Powergy, fitted to a Volvo XC60. Date code is 3325. Any help gratefully received. Read more”

Category by category

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

  1. 66

    Dry

    Powergy +6
    72
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Professional tests (TWG score) · 1 / 1 tests6577
    Reviews found online6664

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

    Powergy: 60% × 76.9 + 40% × 64.4 = 72

  2. 73

    Wet

    Solus HS51 Harmony Sports +1
    72
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Professional tests (TWG score) · 1 / 1 tests7576
    Reviews found online7067

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

    Powergy: 60% × 75.6 + 40% × 67.2 = 72

  3. 59

    Comfort

    Powergy +9
    68
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Professional tests (TWG score) · 1 / 1 tests5174
    Reviews found online7158

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

    Powergy: 60% × 73.9 + 40% × 58 = 68

  4. –

    Noise

    No comparison
    75
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Professional tests (TWG score) · – / 1 tests–80
    Reviews found online–≈ 67 (est.)

    Powergy: 60% × 79.6 + 40% × 67.3 (est.) = 75

    No owner ratings of noise for Powergy. The owner half is the owners’ average (67): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.

  5. 66

    Treadwear

    Solus HS51 Harmony Sports +9
    57
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Professional tests (TWG score)≈ 66 (est.)≈ 61 (est.)
    Reviews found online6651

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

    Powergy: 60% × 61 (est.) + 40% × 50.5 = 57

    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 Powergy. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).

  6. 61

    Handling (owners)

    Powergy +3
    64
    Why this score
    SourceSolus HS51 Harmony SportsPowergy
    Reviews found online6164
Scores at a glance
Kumho Solus HS51 Harmony Sports vs Pirelli Powergy: scores by category (0–100)
CategoryKumho Solus HS51 Harmony SportsPirelli Powergy
Relative Score 67 68
Dry 66 72
Wet 73 72
Comfort 59 68
Noise – 75
Treadwear 66 57
Handling (owners) 61 64

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
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

Solus HS51 Harmony Sports

Powergy

Only categories both tires have data for count toward the headline score.

The professional test results behind the scores

Per discipline: the average % of the best tire over every test both tires were in, and how many of those tests each one won. “Different tests” rows compare results from separate tests.

DisciplineCategorySolus HS51 Harmony SportsPowergyΔHead-to-head
Dry Braking Dry 91% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test 94% #4/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Straight Aquaplaning Wet 100% #1/10 · 2020 Teknikens 17 Inch Summer Tyre Test 92% #4/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Wet Braking Wet 95% #5/10 · 2020 Teknikens 17 Inch Summer Tyre Test 96% #5/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Wet Handling Wet 99% #4/10 · 2020 Teknikens 17 Inch Summer Tyre Test 97% #2/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Comfort (tester's mark) Comfort 20% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test 93% #3/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Also published by the testers (not in the score)
Rolling Resistance Efficiency 94% #10/10 · 2020 Teknikens 17 Inch Summer Tyre Test 81% #5/10 · 2026 autozurnal Eco Summer Tyre Test – Different tests
Overall Ranking Overall #7/10 2020 Teknikens 17 Inch Summer Tyre Test #5/10 2026 autozurnal Eco Summer Tyre Test – Different tests

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 Powergy

Pros

  • Significantly reduced road noise and quiet highway ride
  • Strong dry and wet grip for daily commuting
  • Comfortable and smooth ride quality compared to run-flats

Cons

  • Faster than average tread wear or shallow initial tread depth
  • Negative impact on fuel economy (MPG) for some users
  • Soft sidewalls leading to muted steering feedback and less precise handling at the limit
All owner themes in the Powergy review

What real owners are saying

From Reddit, forums and review threads. Not part of our score

Tire A

Kumho Solus HS51 Harmony Sports

We haven't collected enough community discussion about this tire yet.

Tire B

Pirelli Powergy

Mixed

Community discussions around Pirelli Powergy show mixed views, with many users regarding them as an eco or budget-oriented alternative rather than a performance tire. While some drivers appreciate the attractive pricing and consider them decent for daily driving and fuel economy, others report issues such as highway vibrations or express uncertainty about mixing them with premium lines like Cinturato.

r/mazda3 ·1 upvote ·2026-10-05

“Avg 29mpg on a 2015 Mazda 3 Sport Nav 2L 165bhp, any ideas? I've had this car for about 3-4 weeks now, posted it here on this subreddit too. So far, I've done about 800 miles and my average fuel consumtion seems to be around 29mpg - 10.2L/100km. The car doesn't have its original rims, its on **MAM RS3** 18" rims with Pirelli Powergy tires 215/45/R18 (internet says these tires provide good fuel economy). On longer trips the average is about 40mpg-45mpg which still seems a bit high. My work commute is about 2 miles, and I do occasionally drive in a spirited manner. Is this okay? Thank you all!”

r/GRYaris ·3 upvotes ·2025-03-07

“Are Pirelli Powergy Winter the right winter tires for the GR? Hey, my parents bought a GR Yaris last week and it’s a great car but I looked at its winter tires and those are Pirelli Powergy Winter. I’m not an expert on tires but as far as I know the P-Zero Winter would be the right choice for a GR. My father didn’t bought them because he thought it was the right tires rather a tire salesman talked him into it. I talked him into Pirelli as those were the factory tires for his Volvo 850R and would be a better choice then his current Conti Premium 5 but somehow my father misunderstood me to that point that Pirelli’s are the greatest tires ever. So he asked the salesmen for the best Pirelli Tires and told the car it’s for but the salesman sold him those Powergy tires and said that not all Pirelli’s are in stock. As my father isn’t an enthusiast but loves likes to drive performance cars he didn’t knew better and now it’s too late. In my eyes a good salesman (not in the way of profit for the company rather costumer experience) would have told him that the P-Zeros winter are out of stock but can be ordered or would show him tires from different companies. Another option is the salesman though he meant the GR Sport Yaris for which P-Zero winters are too much as not many persons in their sixties drive a real GR. So my question are the Powergy enough for the GR or should he get P-Zeros next Winter (in a few weeks we will put on summer tires)”

r/tires ·1 upvote ·2025-05-18

“Pirelli cinturato P7 and Pirelli Powergy Hi all 👋🏼 So I had 4 Pirelli Cinturato P7’s on my Ford Focus ST. I got a flat tire (front left) while I was on vacation so I decided to get 2 new tires at the front. I asked the guy at the tire shop to get the same tires (so the Pirelli Cinturato’s). He got me Pirelli Powergy’s instead… He didn’t really speak English and there was not time as I was driving home the next day. So I just accepted it. Now my question is what’s the main difference between these tires? And does it matter I got 2 different tires now? (2 powergy’s at the front and 2 Cinturato’s at the back) Thanks!🙏🏼”

Top themes
#budget and eco line#tire mixing and compatibility#ride comfort and vibrations#pricing and promotions#daily winter driving performance#sidewall durability concerns

Based on 17 community posts

Specs side by side

Attribute A · Kumho Solus HS51 Harmony Sports B · Pirelli Powergy
CategorySummerSummer
Vehicle typePassenger Car / Crossover—
Sizes available—87
Rim diameters—15″ – 21″

Which one should you actually buy?

Kumho Solus HS51 Harmony Sports

Pirelli Powergy

Too close to call: Kumho Solus HS51 Harmony Sports and Pirelli Powergy are within 2 points overall. Kumho Solus HS51 Harmony Sports is stronger on treadwear. Pirelli Powergy is stronger on comfort and dry. Kumho Solus HS51 Harmony Sports rests on little evidence so far (1 test, 5 reviews), so read this result as provisional.

Pick tire A You want the longest tread life

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

Pick tire B You want the most comfortable ride

Pirelli Powergy scores 68 vs 59 on comfort.

Pick tire B You want the most grip on dry roads

Pirelli Powergy scores 72 vs 66 on dry.

Tire A · Kumho Solus HS51 Harmony Sports
Tire B · Pirelli Powergy

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Solus HS51 Harmony Sports or Powergy?

Which is better in the wet, Solus HS51 Harmony Sports or Powergy?

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 Powergy?

Pirelli Powergy, 72 vs 66 on our dry score.

Which is more comfortable, Solus HS51 Harmony Sports or Powergy?

Pirelli Powergy, 68 vs 59 on our comfort score.

Which lasts longer, Solus HS51 Harmony Sports or Powergy?

Kumho Solus HS51 Harmony Sports, 66 vs 57 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