Tests – · none yet Owners 68 · 10 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 FK451 vs Michelin Primacy MXM4 — 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 + 1 road tests and 10 + 10 owner reviews. How we score
FK451 is ahead, 68–62
Add your size for an exact match
/R
Both Amazon links then search this exact size.
TireWheelGuide may earn a commission from purchases made through these links.
Tests 72 · 1 test Owners 54 · 10 reviews
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
67
Dry
Primacy MXM4 +673Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) · – / 1 tests ≈ 67 (est.) 87 Reviews found online 66 51 FK451: 60% × 67.1 (est.) + 40% × 65.9 = 67
Primacy MXM4: 60% × 87.1 + 40% × 51.1 = 73
No road tests of dry for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.41).
-
71
Wet
FK451 +1457Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) · – / 1 tests ≈ 71 (est.) 57 Reviews found online 71 57 FK451: 60% × 71 (est.) + 40% × 71.2 = 71
Primacy MXM4: 60% × 56.7 + 40% × 57 = 57
No road tests of wet for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
–
Snow
No comparison57Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) – ≈ 63 (est.) Reviews found online – 47 Primacy MXM4: 60% × 63.1 (est.) + 40% × 47.3 = 57
No road tests of snow for Primacy MXM4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.32).
-
67
Comfort
FK451 +1354Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) · – / 1 tests ≈ 68 (est.) 63 Reviews found online 67 47 FK451: 40% × 68.3 (est.) + 60% × 66.6 = 67
Primacy MXM4: 40% × 63.4 + 60% × 47.3 = 54
No road tests of comfort for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.20).
-
–
Noise
No comparison75Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) · – / 1 tests – 81 Reviews found online – ≈ 66 (est.) Primacy MXM4: 60% × 80.8 + 40% × 66.3 (est.) = 75
No owner ratings of noise for Primacy MXM4. The owner half is the owners’ average (66): owners’ noise ratings barely follow the road tests, so the tests say nothing about how owners would rate it.
-
68
Treadwear
FK451 +662Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) ≈ 67 (est.) ≈ 64 (est.) Reviews found online 69 59 FK451: 60% × 67.4 (est.) + 40% × 68.9 = 68
Primacy MXM4: 60% × 63.9 (est.) + 40% × 59.2 = 62
No road tests of treadwear for FK451. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
No road tests of treadwear for Primacy MXM4. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.36).
-
66
Handling (owners)
FK451 +1749Why this score
Source FK451 Primacy MXM4 Reviews found online 66 49 -
–
Efficiency
No comparison55Why this score
Source FK451 Primacy MXM4 Professional tests (TWG score) · – / 1 tests – 55
Scores at a glance
| Category | Falken FK451 | Michelin Primacy MXM4 |
|---|---|---|
| Relative Score | 68 | 62 |
| Dry | 67 | 73 |
| Wet | 71 | 57 |
| Snow | – | 57 |
| Comfort | 67 | 54 |
| Noise | – | 75 |
| Treadwear | 68 | 62 |
| Handling (owners) | 66 | 49 |
| Efficiency | – | 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
Not important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
68
/ 100
FK451
62
/ 100
Primacy MXM4
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 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
Tire B Primacy MXM4
Pros
- Exceptional ride comfort and vibration dampening
- Strong tread life and durability
- High fuel efficiency
Cons
- Mediocre dry grip and handling precision
- Noticeable understeer when cornering
- Soft sidewalls that lack steering feedback
Specs side by side
| Attribute | A · Falken FK451 | B · Michelin Primacy MXM4 |
|---|---|---|
| Category | Summer | All Season |
| Vehicle type | Passenger Car / Crossover | Passenger Car / Crossover |
| UTQG | 280 AA A | 420 - 500 AA - B A |
Which one should you actually buy?
68
/ 100
Falken FK451
62
/ 100
Michelin Primacy MXM4
Winner: Falken FK451 — better handling, wet and comfort. Pick the Michelin Primacy MXM4 if dry matters most to you. Falken FK451 rests on little evidence so far (0 tests, 10 reviews), so read this result as provisional. Michelin Primacy MXM4 rests on little evidence so far (1 test, 10 reviews), so read this result as provisional.
Pick tire A
You enjoy sharp, responsive handling
Falken FK451 scores 66 vs 49 on handling.
Pick tire A
Your priority is wet-weather safety
Falken FK451 scores 71 vs 57 on wet.
Pick tire A
You want the most comfortable ride
Falken FK451 scores 67 vs 54 on comfort.
Pick tire A
You want the longest tread life
Falken FK451 scores 68 vs 62 on treadwear.
Tire A · Falken FK451
Tire B · Michelin Primacy MXM4
TireWheelGuide may earn a commission from purchases made through these links.
FK451 or Primacy MXM4?
Which is better in the wet, FK451 or Primacy MXM4?
Falken FK451, 71 vs 57 on our wet score.
Which grips better on dry roads, FK451 or Primacy MXM4?
Michelin Primacy MXM4, 73 vs 67 on our dry score.
Which is more comfortable, FK451 or Primacy MXM4?
Falken FK451, 67 vs 54 on our comfort score.
Which lasts longer, FK451 or Primacy MXM4?
Falken FK451, 68 vs 62 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