Tests 68 · 1 test Owners 67 · 5 reviews
Best test result: #1 of 10 in 2020 Teknikens 17 Inch Summer Tyre Test (straight aquaplaning)
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 Toyo Proxes Sport — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 1 + 20 road tests and 5 + 1,277 owner reviews. How we score
Solus HS51 Harmony Sports is ahead, 67–60
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Tests 58 · 20 tests Owners 54 · 1,277 reviews
Best test result: #1 of 11 in 2018 AMS Summer UHP Tyre Test (straight aquaplaning)
“Had the older version on an SRT8. Grip & performance were great. But wear was not. 10K miles(2 rotations) is all I got.”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
66
Dry
Solus HS51 Harmony Sports +462Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) · 1 / 18 tests 65 61 Reviews found online 66 64 Solus HS51 Harmony Sports: 60% × 65.4 + 40% × 65.8 = 66
Proxes Sport: 60% × 60.7 + 40% × 63.9 = 62
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73
Wet
Solus HS51 Harmony Sports +370Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) · 1 / 18 tests 75 76 Reviews found online 70 61 Solus HS51 Harmony Sports: 60% × 75.3 + 40% × 70.4 = 73
Proxes Sport: 60% × 76.1 + 40% × 60.8 = 70
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–
Snow
No comparison34Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) – ≈ 50 (est.) Reviews found online – 10 Proxes Sport: 60% × 50.1 (est.) + 40% × 10 = 34
No road tests of snow for Proxes Sport. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.33).
-
59
Comfort
Solus HS51 Harmony Sports +554Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) · 1 / 5 tests 51 50 Reviews found online 71 60 Solus HS51 Harmony Sports: 60% × 51 + 40% × 70.7 = 59
Proxes Sport: 60% × 50.1 + 40% × 59.8 = 54
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–
Noise
No comparison71Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) · – / 11 tests – 72 Reviews found online – 69 Proxes Sport: 60% × 72.1 + 40% × 68.8 = 71
-
66
Treadwear
Solus HS51 Harmony Sports +2244Why this score
Source Solus HS51 Harmony Sports Proxes Sport Professional tests (TWG score) · – / 5 tests ≈ 66 (est.) 36 Reviews found online 66 56 Solus HS51 Harmony Sports: 60% × 65.7 (est.) + 40% × 65.9 = 66
Proxes Sport: 60% × 35.5 + 40% × 56.1 = 44
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).
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61
Handling (owners)
Solus HS51 Harmony Sports +655Why this score
Source Solus HS51 Harmony Sports Proxes Sport Reviews found online 61 55
Scores at a glance
| Category | Kumho Solus HS51 Harmony Sports | Toyo Proxes Sport |
|---|---|---|
| Relative Score | 67 | 60 |
| Dry | 66 | 62 |
| Wet | 73 | 70 |
| Snow | – | 34 |
| Comfort | 59 | 54 |
| Noise | – | 71 |
| Treadwear | 66 | 44 |
| Handling (owners) | 61 | 55 |
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
67
/ 100
Solus HS51 Harmony Sports
60
/ 100
Proxes Sport
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.
| Discipline | Category | Solus HS51 Harmony Sports | Proxes Sport | Δ | Head-to-head |
|---|---|---|---|---|---|
| Dry Braking | Dry | 91% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 92% #7/8 · 2021 Sport Auto UHP Summer Tyre Test | – | Different tests |
| Straight Aquaplaning | Wet | 100% #1/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 98% #3/8 · 2021 Sport Auto UHP Summer Tyre Test | – | Different tests |
| Wet Braking | Wet | 95% #5/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 82% #8/8 · 2021 Sport Auto UHP Summer Tyre Test | – | Different tests |
| Wet Handling | Wet | 99% #4/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 94% #8/8 · 2021 Sport Auto UHP Summer Tyre Test | – | Different tests |
| Comfort (tester's mark) | Comfort | 20% #9/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 60% #10/11 · 2020 AMS 18 Inch 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 | 86% #7/8 · 2021 Sport Auto UHP Summer Tyre Test | – | Different tests |
| Tyre Weight | Other | 86% #6/10 · 2020 Teknikens 17 Inch Summer Tyre Test | 95% #4/10 · 2020 UHP, UUHP and Track Day Tyre Test | – | Different tests |
| Overall Ranking | Overall | #7/10 2020 Teknikens 17 Inch Summer Tyre Test | #15/22 2022 Consumer Reports Ultra High Performance Summer Tires | – | 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
Tire B Proxes Sport
Pros
- Significantly more affordable than premium tier summer tires while offering around 80-90% of the performance
- Commendable grip and handling in dry conditions with a progressive, predictable breakaway
- Low road noise and generally high ride comfort compared to factory run-flats or older performance tires
Cons
- Faster-than-expected tread wear, with multiple users reporting replacement necessary between 6,000 and 12,000 miles
- Inconsistent or slippery wet-weather traction and occasional tendency to hydroplane in heavy standing water
- Stiff sidewalls on certain sizes leading to a harsher ride quality or increased noise for some drivers
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
Positive
Toyo Proxes Sport
Community sentiment toward the Toyo Proxes Sport family is generally positive, with drivers praising its ride comfort, good value for money, and competent daily street grip. Many owners appreciate unique size options like 345/25-20 for high-performance cars, though enthusiasts note that dedicated track tires offer superior turn-in sharpness and ultimate traction. A common topic of discussion is the scarcity of extensive real-world reviews, particularly regarding newer variants.
corvetteforum.com
“Had the older version on an SRT8. Grip & performance were great. But wear was not. 10K miles(2 rotations) is all I got.”
r/TyreReviews
·17 upvotes ·2026-08-27
“Toyo Proxes Sport 2 Really enjoyed these Proxes Sport 2s on my Alpina over the last year - in fact they’re so good I’ve put them on the B3 too! Great value for money. Read more”
r/tires
·2 upvotes ·2026-08-09
“I have real world experience with the Toyo Proxes Sport AS+. This may be the best all around tire on the planet IMO. I'm old and so I've tried multiple tires in real world conditions as a daily driver with performance in mind. I know every Michelin and Pirelli. I've become an expert on available tires in the USA.. What you will find with This tire: * They are immediately quiet *Resist hydroplaning in big water * Higher than expected dry performance in super hot weather for an AS * Maintain tread pattern to the death and remain quiet. These tires are next level.”
Top themes
#Value for money#Ride comfort#Street vs track performance#Wide fitment availability#Tread wear and longevity#Limited review availability
Based on 34 community posts
Specs side by side
| Attribute | A · Kumho Solus HS51 Harmony Sports | B · Toyo Proxes Sport |
|---|---|---|
| Category | Summer | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | — | 83 |
| Rim diameters | — | 17″ – 21″ |
| Tread depth | — | 9 - 10/32″ |
| UTQG | — | 240 AA A |
| Treadwear warranty | — | 25,000 mi |
| Sidewall | — | Black Side Wall |
| Max pressure | — | 50 - 51 psi |
Which one should you actually buy?
67
/ 100
Kumho Solus HS51 Harmony Sports
60
/ 100
Toyo Proxes Sport
Winner: Kumho Solus HS51 Harmony Sports — better treadwear, handling and comfort. It leads or ties in every category we score. 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 44 on treadwear.
Pick tire A
You enjoy sharp, responsive handling
Kumho Solus HS51 Harmony Sports scores 61 vs 55 on handling.
Pick tire A
You want the most comfortable ride
Kumho Solus HS51 Harmony Sports scores 59 vs 54 on comfort.
Pick tire A
You want the most grip on dry roads
Kumho Solus HS51 Harmony Sports scores 66 vs 62 on dry.
Tire A · Kumho Solus HS51 Harmony Sports
Tire B · Toyo Proxes Sport
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Solus HS51 Harmony Sports or Proxes Sport?
Which is better in the wet, Solus HS51 Harmony Sports or Proxes Sport?
Kumho Solus HS51 Harmony Sports, 73 vs 70 on our wet score.
Which grips better on dry roads, Solus HS51 Harmony Sports or Proxes Sport?
Kumho Solus HS51 Harmony Sports, 66 vs 62 on our dry score.
Which is more comfortable, Solus HS51 Harmony Sports or Proxes Sport?
Kumho Solus HS51 Harmony Sports, 59 vs 54 on our comfort score.
Which lasts longer, Solus HS51 Harmony Sports or Proxes Sport?
Kumho Solus HS51 Harmony Sports, 66 vs 44 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