Michelin Primacy 4+ vs Falken ZIEX ZE320
Ahead in each discipline
The Michelin Primacy 4+ and the Falken ZIEX ZE320 have met in one independent test so far, and the ZIEX ZE320 finished ahead. The Primacy 4+ was stronger in comfort and value, the ZIEX ZE320 in dry and wet.
Performance profile
11 measurements from the one shared test, each tire shown as its share of the better figure.
Where each is furthest ahead
Primacy 4+
ZIEX ZE320
Point at or tap any spoke for both tires' figures.
In each test the better of the two figures counts as 100% and the other as its share of it, so a 118 ft stop against 112 ft is 95%; each spoke averages the shared tests that recorded it.
Where each scores higher
Primacy 4+
ZIEX ZE320
Point at or tap any spoke for both tires' figures.
Category scores are percentiles among tires of the same season and class: 90 means this tire out-performs 90% of them, measured across every test we hold, not only the ones it appeared in.
Where owners rate each higher
Primacy 4+
Not ahead in any category
ZIEX ZE320
Point at or tap any spoke for both tires' figures.
Owners rate the Primacy 4+ 79% from 40 reviews and the ZIEX ZE320 87% from 17. Each spoke is one question owners answer out of 10; reviews are vetted by hand before publication.
Every measurement, side by side
Both tires' figures from the one test that ran them together, on the same car, in the same size, on the same day. The bar grows towards the tire that did better.
| Measurement | Primacy 4+ | Gap | ZIEX ZE320 |
|---|---|---|---|
| Dry ZIEX ZE320 ahead | |||
| Dry Braking ft | 116 | 2.9% | 112 |
| Dry Handling s | 86.43 | 1% | 85.54 |
| Subj. Dry Handling pts | 10 | 5.3% | 9.5 |
| Wet ZIEX ZE320 ahead | |||
| Wet Braking ft | 89 | 6.2% | 84 |
| Wet Handling s | 109.9 | 4.3% | 105.2 |
| Subj. Wet Handling pts | 8.75 | 14.3% | 10 |
| Straight Aqua mph | 60.7 | 2.3% | 59.3 |
| Curved Aquaplaning ft/s² | 8.5 | 13.7% | 7.4 |
| Comfort Primacy 4+ ahead | |||
| Subj. Comfort pts | 10 | 11.1% | 9 |
| Noise dB | 71.1 | 0.1 dB | 71.2 |
| Value Primacy 4+ ahead | |||
| Rolling Resistance kg / t | 7.57 | 2.6% | 7.77 |
Braking distances and lap times are better when lower; speeds, wear and grip figures when higher. A test's figures are its own: sizes, cars, surfaces and temperatures differ from one to the next, which is why the averages here are only ever of tests the two tires shared.
Head to head in 1 test in 2025
Each row is one published test in which both tires ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | Primacy 4+ | Field | ZIEX ZE320 |
|---|---|---|---|
| The Best Touring Tires for 2025 Tested | P5 of 7 | P3 of 7 |
Primacy 4+ vs ZIEX ZE320: your questions
Is the Michelin Primacy 4+ or the Falken ZIEX ZE320 the better tire?
The Michelin Primacy 4+ and the Falken ZIEX ZE320 have met in one independent test so far, and the ZIEX ZE320 finished ahead. On the Tire Reviews Score, which weighs every test and review we hold, the Primacy 4+ scores 8.8 and the ZIEX ZE320 9.4 out of 10.
Which is better in the wet, the Primacy 4+ or the ZIEX ZE320?
The ZIEX ZE320 led 3 of the 5 wet measurements the shared tests recorded.
Which is better in the dry?
The ZIEX ZE320 led 2 of the 3 dry measurements the shared tests recorded.
Which is quieter and more comfortable?
Owners rate comfort 8.1/10 for the Primacy 4+ and 8.5/10 for the ZIEX ZE320.
What do owners say?
Owners rate the Primacy 4+ 79% from 40 reviews and the ZIEX ZE320 87% from 17. 68% of Primacy 4+ owners would buy it again, against 80% for the ZIEX ZE320.
Are they available in the same sizes?
The Primacy 4+ is made in 66 sizes (16 to 21 inch) and the ZIEX ZE320 in 53 (15 to 18 inch). 42 sizes are available in both. On the EU label the Primacy 4+ is graded A for wet grip and C for rolling resistance in most sizes; the ZIEX ZE320 A and C.
Which is the newer tire?
The ZIEX ZE320 is the newer design: it reached the market in 2024, the Primacy 4+ in 2022. The Primacy 4+ replaced the Michelin Primacy 4. The ZIEX ZE320 replaced the Falken ZIEX ZE310 EcoRun.
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Run either of these?
Your review is the part of this page no test can supply: how the tire wore, how it aged, what it was like in the rain in year three. It takes about five minutes.
Where this data comes from
Finishing positions and measurements are transcribed from each published test. A test only counts here when both tires ran in it, so every figure was recorded on the same car, size and day as the one it is compared to.
About the TR Score
The Tire Reviews Score rates each tire out of 10 from every independent test result and vetted owner review we hold, so two tires can be compared even before a test has run them together.
Who does the testing
Every test published as a Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.