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Falken Azenis RT-615K vs Nitto NT555 — 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 + 0 road tests and 6 + 13 owner reviews. How we score

Too close to call: Azenis RT-615K and NT555 are level at 51.

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Falken Azenis RT-615K
Tire AFalken

Azenis RT-615K

Summer tire

± 8Provisional

Tests – · none yet Owners 39 · 6 reviews

Nitto NT555
Tire BNitto

NT555

Summer

± 8Provisional

Tests – · none yet Owners 43 · 13 reviews

Category by category

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

  1. 60

    Dry

    Azenis RT-615K +6
    54
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 63 (est.)≈ 59 (est.)
    Reviews found online5547

    Azenis RT-615K: 60% × 62.7 (est.) + 40% × 55.2 = 60

    NT555: 60% × 59.3 (est.) + 40% × 47 = 54

    No road tests of dry for Azenis RT-615K. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

    No road tests of dry for NT555. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).

  2. 54

    Wet

    Azenis RT-615K +2
    52
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 58 (est.)≈ 56 (est.)
    Reviews found online4744

    Azenis RT-615K: 60% × 57.9 (est.) + 40% × 47.2 = 54

    NT555: 60% × 56.3 (est.) + 40% × 44.4 = 52

    No road tests of wet for Azenis RT-615K. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

    No road tests of wet for NT555. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).

  3. 35

    Snow

    NT555 +7
    42
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 52 (est.)≈ 55 (est.)
    Reviews found online1123

    Azenis RT-615K: 60% × 51.6 (est.) + 40% × 10.9 = 35

    NT555: 60% × 55.3 (est.) + 40% × 22.6 = 42

    No road tests of snow for Azenis RT-615K. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

    No road tests of snow for NT555. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).

  4. 52

    Comfort

    Azenis RT-615K +1
    51
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 64 (est.)≈ 64 (est.)
    Reviews found online4443

    Azenis RT-615K: 40% × 63.6 (est.) + 60% × 43.6 = 52

    NT555: 40% × 63.5 (est.) + 60% × 43.2 = 51

    No road tests of comfort for Azenis RT-615K. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

    No road tests of comfort for NT555. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).

  5. 58

    Noise

    NT555 +1
    59
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 66 (est.)≈ 66 (est.)
    Reviews found online4549

    Azenis RT-615K: 60% × 66.4 (est.) + 40% × 44.8 = 58

    NT555: 60% × 66.4 (est.) + 40% × 49 = 59

    No road tests of noise for Azenis RT-615K or NT555. The test half is the tested tires’ average (66): owners’ noise ratings barely follow the road tests.

  6. 40

    Treadwear

    NT555 +12
    52
    Why this score
    SourceAzenis RT-615KNT555
    Professional tests (TWG score)≈ 51 (est.)≈ 58 (est.)
    Reviews found online2444

    Azenis RT-615K: 60% × 51.1 (est.) + 40% × 23.9 = 40

    NT555: 60% × 58.3 (est.) + 40% × 43.7 = 52

    No road tests of treadwear for Azenis RT-615K. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

    No road tests of treadwear for NT555. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).

  7. 58

    Handling (owners)

    Azenis RT-615K +8
    50
    Why this score
    SourceAzenis RT-615KNT555
    Reviews found online5850
Scores at a glance
CategoryFalken Azenis RT-615KNitto NT555
Relative Score 51 51
Dry 60 54
Wet 54 52
Snow 35 42
Comfort 52 51
Noise 58 59
Treadwear 40 52
Handling (owners) 58 50

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
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Recomputed
Headline score
± 8

Azenis RT-615K

± 8

NT555

Pros, cons & observations

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

Tire A Azenis RT-615K

Pros

  • Exceptional dry pavement grip and handling around corners
  • Telepathic and highly responsive steering feedback
  • Predictable and progressive breakaway behavior

Cons

  • Rapid tread wear and short lifespan under aggressive driving
  • Dangerous winter and snow performance
  • Increased road noise at highway speeds
All owner themes in the Azenis RT-615K review

Tire B NT555

Pros

  • Exceptional dry grip and sticky, hot-tar-like road adhesion
  • Enhanced handling and high-speed stability
  • Sporty aesthetic and semi-slick feel favored by enthusiasts

Cons

  • Subpar wet weather traction and dangerous in winter/cold conditions
  • Can struggle to maintain traction on higher-horsepower vehicles (e.g., V8 setups)
  • Notable road noise that increases as the tire wears
All owner themes in the NT555 review

Specs side by side

Attribute A · Falken Azenis RT-615K B · Nitto NT555
CategorySummer tireSummer
Vehicle typePassenger Car / CrossoverPassenger Car / Crossover
Sizes available153
Rim diameters16″15″ – 22″
Tread depth8/32″10.3/32″
UTQG200 A A300 A A
SidewallBlackwallBlackwall
Max pressure51 psi50 psi

Which one should you actually buy?

Falken Azenis RT-615K

Nitto NT555

Too close to call: Falken Azenis RT-615K and Nitto NT555 are within 2 points overall. Falken Azenis RT-615K is stronger on handling and dry. Nitto NT555 is stronger on treadwear and snow. Falken Azenis RT-615K rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional. Nitto NT555 rests on little evidence so far (0 tests, 13 reviews), so read this result as provisional.

Pick tire B You want the longest tread life

Nitto NT555 scores 52 vs 40 on treadwear.

Pick tire A You enjoy sharp, responsive handling

Falken Azenis RT-615K scores 58 vs 50 on handling.

Pick tire B You drive through snowy winters

Nitto NT555 scores 42 vs 35 on snow.

Pick tire A You want the most grip on dry roads

Falken Azenis RT-615K scores 60 vs 54 on dry.

Tire A · Falken Azenis RT-615K
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Tire B · Nitto NT555
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Azenis RT-615K or NT555?

Which is better in the wet, Azenis RT-615K or NT555?

Neither, by our numbers: 54 vs 52 on the wet score, within 3 points.

Which grips better on dry roads, Azenis RT-615K or NT555?

Falken Azenis RT-615K, 60 vs 54 on our dry score.

Which is better in snow, Azenis RT-615K or NT555?

Nitto NT555, 42 vs 35 on our snow score.

Which is quieter, Azenis RT-615K or NT555?

Neither, by our numbers: 58 vs 59 on the noise score, within 3 points.

Which is more comfortable, Azenis RT-615K or NT555?

Neither, by our numbers: 52 vs 51 on the comfort score, within 3 points.

Which lasts longer, Azenis RT-615K or NT555?

Nitto NT555, 52 vs 40 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