Tests – · none yet Owners 76 · 32 reviews
Head-to-head
Updated
Hankook Optimo 4S vs Nitto NT555 G2 — 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 0 + 2 road tests and 32 + 412 owner reviews. How we score
Optimo 4S is ahead, 75–59
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Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
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74
Dry
Optimo 4S +1955Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) · – / 1 tests ≈ 72 (est.) 49 Reviews found online 77 64 Optimo 4S: 60% × 71.5 (est.) + 40% × 76.6 = 74
NT555 G2: 60% × 49 + 40% × 63.8 = 55
No road tests of dry for Optimo 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
-
79
Wet
Optimo 4S +2851Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) · – / 1 tests ≈ 77 (est.) 48 Reviews found online 82 54 Optimo 4S: 60% × 76.8 (est.) + 40% × 81.9 = 79
NT555 G2: 60% × 48.3 + 40% × 53.9 = 51
No road tests of wet for Optimo 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
–
Snow
No comparison48Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) – ≈ 58 (est.) Reviews found online – 33 NT555 G2: 60% × 58.4 (est.) + 40% × 32.7 = 48
No road tests of snow for NT555 G2. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
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75
Comfort
Optimo 4S +966Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) ≈ 71 (est.) ≈ 68 (est.) Reviews found online 78 65 Optimo 4S: 40% × 70.5 (est.) + 60% × 78.1 = 75
NT555 G2: 40% × 67.9 (est.) + 60% × 64.9 = 66
No road tests of comfort for Optimo 4S or NT555 G2. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
–
Noise
No comparison65Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) – ≈ 66 (est.) Reviews found online – 64 NT555 G2: 60% × 66.3 (est.) + 40% × 64 = 65
No road tests of noise for NT555 G2. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.
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69
Treadwear
NT555 G2 +776Why this score
Source Optimo 4S NT555 G2 Professional tests (TWG score) · – / 1 tests ≈ 68 (est.) 83 Reviews found online 70 66 Optimo 4S: 60% × 67.9 (est.) + 40% × 70.4 = 69
NT555 G2: 60% × 83.3 + 40% × 66 = 76
No road tests of treadwear for Optimo 4S. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
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75
Handling (owners)
Optimo 4S +1362Why this score
Source Optimo 4S NT555 G2 Reviews found online 75 62
Scores at a glance
| Category | Hankook Optimo 4S | Nitto NT555 G2 |
|---|---|---|
| Relative Score | 75 | 59 |
| Dry | 74 | 55 |
| Wet | 79 | 51 |
| Snow | – | 48 |
| Comfort | 75 | 66 |
| Noise | – | 65 |
| Treadwear | 69 | 76 |
| Handling (owners) | 75 | 62 |
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
75
/ 100
Optimo 4S
59
/ 100
NT555 G2
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 | Optimo 4S | NT555 G2 | Δ | Head-to-head |
|---|---|---|---|---|---|
| Also published by the testers (not in the score) | |||||
| Overall Ranking | Overall | #7/7 2016 ADAC All Season Tyre Test | #10/10 2025 Tire Rack UUHP Summer Tyre Test | – | Different tests |
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A Optimo 4S
Pros
- Excellent traction and confidence in snow and icy conditions
- Strong performance in wet weather and standing water
- High levels of ride comfort and low road noise
Cons
- Dry road handling can feel slightly compromised compared to dedicated summer tires
- Some reports of increased noise levels when the tires are brand new
- Occasional reports of uneven tread wear or balancing issues
Tire B NT555 G2
Pros
- Aggressive, visually appealing tread pattern and sidewall design
- Exceptional value and lower price point compared to premium brands like Michelin or Pirelli
- Long-lasting tread life and slow wear rates for a summer performance tire
Cons
- Poor wet-weather traction, with multiple users reporting hydroplaning and a slippery feel in the rain
- Lack of straight-line traction and wheel spin under heavy acceleration, especially on high-horsepower RWD vehicles
- Subpar performance in cooler temperatures or cold conditions, requiring heat to grip properly
Specs side by side
| Attribute | A · Hankook Optimo 4S | B · Nitto NT555 G2 |
|---|---|---|
| Category | All Season | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Sizes available | 35 | 88 |
| Rim diameters | 13″ – 17″ | 15″ – 22″ |
| Tread depth | — | 10.2/32″ |
| UTQG | 520 - 600 A A | 320 A A |
| Sidewall | — | Blackwall |
| Max pressure | — | 50 psi |
| Sizes in common | 4 | 4 |
Which one should you actually buy?
75
/ 100
Hankook Optimo 4S
59
/ 100
Nitto NT555 G2
Winner: Hankook Optimo 4S — better wet, dry and handling. Pick the Nitto NT555 G2 if treadwear matters most to you.
Pick tire A
Your priority is wet-weather safety
Hankook Optimo 4S scores 79 vs 51 on wet.
Pick tire A
You want the most grip on dry roads
Hankook Optimo 4S scores 74 vs 55 on dry.
Pick tire A
You enjoy sharp, responsive handling
Hankook Optimo 4S scores 75 vs 62 on handling.
Pick tire A
You want the most comfortable ride
Hankook Optimo 4S scores 75 vs 66 on comfort.
Tire A · Hankook Optimo 4S
Tire B · Nitto NT555 G2
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Optimo 4S or NT555 G2?
Which is better in the wet, Optimo 4S or NT555 G2?
Hankook Optimo 4S, 79 vs 51 on our wet score.
Which grips better on dry roads, Optimo 4S or NT555 G2?
Hankook Optimo 4S, 74 vs 55 on our dry score.
Which is more comfortable, Optimo 4S or NT555 G2?
Hankook Optimo 4S, 75 vs 66 on our comfort score.
Which lasts longer, Optimo 4S or NT555 G2?
Nitto NT555 G2, 76 vs 69 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