Kleber Dynaxer HP4 vs Michelin Primacy 4+
In the 3 independent tests that ran both tyres, the Michelin Primacy 4+ finished ahead 3 times and the Dynaxer HP4 not once. The Primacy 4+ was stronger in dry, wet, comfort and value.
Performance profile
6 measurements from the 3 shared tests, each tyre shown as its share of the better figure in every test.
Where each is furthest ahead
Dynaxer HP4
Not ahead on any measurement here
Primacy 4+
Point at or tap any spoke for both tyres' figures.
In each test the better of the two figures counts as 100% and the other as its share of it, so a 36 m stop against 34.2 m is 95%; each spoke averages the shared tests that recorded it. The scale stops at 96%: a point further in sits on the hub's edge, hollow. 8 measurements recorded in only one shared test are left off; every measurement is in the table further down.
Where each scores higher
Dynaxer HP4
Primacy 4+
Point at or tap any spoke for both tyres' figures.
Category scores are percentiles among tyres of the same season and class: 90 means this tyre out-performs 90% of them, measured across every test we hold, not only the ones it appeared in.
Where owners rate each higher
Dynaxer HP4
Primacy 4+
Not ahead in any category
Point at or tap any spoke for both tyres' figures.
Owners rate the Dynaxer HP4 83% from 25 reviews and the Primacy 4+ 79% from 40. Each spoke is one question owners answer out of 10; reviews are vetted by hand before publication.
Every measurement, side by side
Averages of the figures both tyres posted in the same tests. The gap is the average of each test's own gap, so figures from different cars and years are never mixed. Wins count the tests in which each tyre did better.
| Measurement | Dynaxer HP4 | Gap | Primacy 4+ | Wins |
|---|---|---|---|---|
| Dry Primacy 4+ ahead | ||||
| Dry Braking m | 37.37 | 2.3% | 36.5 | 0-3 |
| Dry Handling km/h | 114.4 | 0.6% | 115.1 | 0-1 |
| Wet Primacy 4+ ahead | ||||
| Wet Braking m | 38 | 5.4% | 35.9 | 0-3 |
| Wet Braking - Concrete m | 39.5 | 4.6% | 37.7 | 0-1 |
| Wet Handling km/h | 73.6 | 1.2% | 74.5 | 0-1 |
| Wet Circle m/s | 6.04 | 3.3% | 6.24 | 0-1 |
| Straight Aqua km/h | 82.05 | 2.8% | 84.35 | 0-2 |
| Curved Aquaplaning m/sec2 | 4.1 | 1.8% | 4.2 | 1-1 |
| Comfort Primacy 4+ ahead | ||||
| Noise dB | 71.6 | = | 71.6 | 1-1 |
| Tyre Weight kg | 8.8 | 2.3% | 8.6 | 0-1 |
| Value Primacy 4+ ahead | ||||
| Wear km | 36,675 | 40.7% | 50,125 | 0-2 |
| Rolling Resistance kg / t | 7.8 | 4.4% | 8.16 | 1-0 |
| Fuel Consumption l/100km | 5.7 | 1.7% | 5.8 | 1-0 |
| Abrasion mg/km/t | 63.5 | 15.4% | 53.7 | 0-1 |
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 tyres shared.
Head to head in 3 tests, 2023 to 2024
Each row is one published test in which both tyres ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | Dynaxer HP4 | Field | Primacy 4+ |
|---|---|---|---|
| 2024 AutoBild Summer Tyre Test | P12 of 20 | P1 of 20 | |
| 2024 Summer Tyre Market Overview | P15 of 55 | P5 of 55 | |
| 2023 ADAC Summer Tyre Test | P12 of 50 | P3 of 50 |
Dynaxer HP4 vs Primacy 4+: your questions
Is the Kleber Dynaxer HP4 or the Michelin Primacy 4+ the better tyre?
In the 3 independent tests that ran both tyres, the Michelin Primacy 4+ finished ahead 3 times and the Dynaxer HP4 not once. On the Tyre Reviews Score, which weighs every test and review we hold, the Dynaxer HP4 scores 8.2 and the Primacy 4+ 8.8 out of 10.
Which is better in the wet, the Dynaxer HP4 or the Primacy 4+?
The Primacy 4+ led 9 of the 10 wet measurements the shared tests recorded. On average it stopped 5.4% shorter in the wet across 3 tests.
Which is better in the dry?
The Primacy 4+ led 4 of the 4 dry measurements the shared tests recorded. On average it stopped 2.3% shorter in the dry across 3 tests.
Which lasts longer and costs less to run?
The Primacy 4+ lasted 40.7% longer in the wear tests (2 tests). Owners rate wear 8/10 for the Dynaxer HP4 and 8/10 for the Primacy 4+.
Which is quieter and more comfortable?
Owners rate comfort 8.6/10 for the Dynaxer HP4 and 8.1/10 for the Primacy 4+.
What do owners say?
Owners rate the Dynaxer HP4 83% from 25 reviews and the Primacy 4+ 79% from 40. 79% of Dynaxer HP4 owners would buy it again, against 68% for the Primacy 4+.
Which is more expensive?
In the 2 tests that listed prices, the Primacy 4+ was the dearer tyre in 2 of them, by 29.8% on average. Prices are the test's own at the time, in its own market.
Are they available in the same sizes?
The Dynaxer HP4 is made in 45 sizes (14 to 17 inch) and the Primacy 4+ in 66 (16 to 21 inch). 19 sizes are available in both. On the EU label the Dynaxer HP4 is graded A for wet grip and C for rolling resistance in most sizes; the Primacy 4+ A and C.
Which is the newer tyre?
The Primacy 4+ is the newer design: it reached the market in 2022, the Dynaxer HP4 in 2019. The Dynaxer HP4 replaced the Kleber Dynaxer HP 3. The Primacy 4+ replaced the Michelin Primacy 4.
More comparisons with these tyres
vs 
Bridgestone Turanza 6 vs Michelin Primacy 4+
1-4 in 5 shared tests
vs
Goodyear EfficientGrip Performance 2 vs Michelin Primacy 4+
2-5 in 7 shared tests
vs
Continental PremiumContact 7 vs Michelin Primacy 4+
9-1 in 10 shared tests
vs
Hankook Ventus Prime 4 vs Michelin Primacy 4+
1-5 in 7 shared tests
vs
Bridgestone Turanza T005 vs Michelin Primacy 4+
2-2 in 4 shared tests
vs 
Michelin Primacy 4+ vs Vredestein Ultrac
5-4 in 9 shared tests
vs
Firestone Roadhawk 2 ENLITEN vs Michelin Primacy 4+
1-2 in 3 shared tests
vs
Falken ZIEX ZE310 EcoRun vs Michelin Primacy 4+
1-6 in 7 shared tests
Run either of these?
Your review is the part of this page no test can supply: how the tyre 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 tyres 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 Tyre Reviews Score rates each tyre out of 10 from every independent test result and vetted owner review we hold, so two tyres can be compared even before a test has run them together.
Who does the testing
Every test published as a Tyre Reviews test is run by Jonathan Benson, who has been testing tyres independently since 2007.