Tests – · none yet Owners 45 · 6 reviews
Falken FK451 looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Falken Azenis RT-615K vs Falken FK451 — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews. Based on 0 + 0 road tests and 6 + 10 owner reviews. How we score
FK451 is ahead, 68–59
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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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65
Dry
FK451 +166Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 66 (est.) ≈ 67 (est.) Reviews found online 63 65 Azenis RT-615K: 60% × 65.8 (est.) + 40% × 63 = 65
FK451: 60% × 66.6 (est.) + 40% × 64.9 = 66
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 0.40).
No road tests of dry for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.40).
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60
Wet
FK451 +1070Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 62 (est.) ≈ 70 (est.) Reviews found online 56 70 Azenis RT-615K: 60% × 62.1 (est.) + 40% × 56.1 = 60
FK451: 60% × 70 (est.) + 40% × 70.2 = 70
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 0.56).
No road tests of wet for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.56).
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36
Snow
No comparison–Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 51 (est.) – Reviews found online 13 – Azenis RT-615K: 60% × 51 (est.) + 40% × 12.7 = 36
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 0.33).
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60
Comfort
FK451 +868Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 66 (est.) ≈ 69 (est.) Reviews found online 52 67 Azenis RT-615K: 60% × 66.2 (est.) + 40% × 51.9 = 60
FK451: 60% × 68.8 (est.) + 40% × 67.4 = 68
No road tests of comfort for Azenis RT-615K or FK451. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
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61
Noise
No comparison–Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 67 (est.) – Reviews found online 51 – Azenis RT-615K: 60% × 67.3 (est.) + 40% × 50.8 = 61
No road tests of noise for Azenis RT-615K. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
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42
Treadwear
FK451 +2567Why this score
Source Azenis RT-615K FK451 Professional tests (TWG score) ≈ 53 (est.) ≈ 66 (est.) Reviews found online 25 68 Azenis RT-615K: 60% × 53.2 (est.) + 40% × 25.3 = 42
FK451: 60% × 66.2 (est.) + 40% × 67.5 = 67
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 0.31).
No road tests of treadwear for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.31).
-
62
Handling (owners)
FK451 +365Why this score
Source Azenis RT-615K FK451 Reviews found online 62 65
Scores at a glance
| Category | Falken Azenis RT-615K | Falken FK451 |
|---|---|---|
| Relative Score | 59 | 68 |
| Dry | 65 | 66 |
| Wet | 60 | 70 |
| Snow | 36 | – |
| Comfort | 60 | 68 |
| Noise | 61 | – |
| Treadwear | 42 | 67 |
| Handling (owners) | 62 | 65 |
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
59
/ 100
Azenis RT-615K
68
/ 100
FK451
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 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
Tire B FK451
Pros
- Exceptional price-to-performance ratio
- Strong wet and dry traction
- Excellent tread life and durability
Cons
- Potential for rubber cracking between treads over long-term storage or extended age
- Some users report a slightly less 'alive' or communicative steering feel compared to premium performance tires
- Availability concerns as it is an older model often superseded by newer iterations
Specs side by side
| Attribute | A · Falken Azenis RT-615K | B · Falken FK451 |
|---|---|---|
| Category | Summer tire | Summer |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| Tread depth | 8/32″ | — |
| UTQG | 200 A A | — |
| Sidewall | Blackwall | — |
| Max pressure | 51 psi | — |
Which one should you actually buy?
59
/ 100
Falken Azenis RT-615K
68
/ 100
Falken FK451
Winner: Falken FK451 — better treadwear, wet and comfort. It leads or ties in every category we score. Falken Azenis RT-615K rests on little evidence so far (0 tests, 6 reviews), so read this result as provisional. Falken FK451 rests on little evidence so far (0 tests, 10 reviews), so read this result as provisional.
Pick tire B
You want the longest tread life
Falken FK451 scores 67 vs 42 on treadwear.
Pick tire B
Your priority is wet-weather safety
Falken FK451 scores 70 vs 60 on wet.
Pick tire B
You want the most comfortable ride
Falken FK451 scores 68 vs 60 on comfort.
Tire A · Falken Azenis RT-615K
Tire B · Falken FK451
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Azenis RT-615K or FK451?
Which is better in the wet, Azenis RT-615K or FK451?
Falken FK451, 70 vs 60 on our wet score.
Which grips better on dry roads, Azenis RT-615K or FK451?
Neither, by our numbers: 65 vs 66 on the dry score, within 3 points.
Which is more comfortable, Azenis RT-615K or FK451?
Falken FK451, 68 vs 60 on our comfort score.
Which lasts longer, Azenis RT-615K or FK451?
Falken FK451, 67 vs 42 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