Michelin Primacy 4 vs Semperit SpeedLife 2: the full picture
This comparison is built only from published independent tests — no manufacturer claims and no sponsored reviews. Between them, the Michelin Primacy 4 and Semperit SpeedLife 2 appear in 29 tests, 2 of which put both tires on the same track on the same day. Head-to-head results carry the most weight here, because surface, weather and test car all change between events and make raw numbers from different tests hard to compare directly.
How the Michelin Primacy 4 performs. It takes the win in wet, dry, noise / comfort, mileage. Its overall Tire Lab Score is 95/100, based on 24 tests.
How the Semperit SpeedLife 2 performs. It takes the win in efficiency. Its overall Tire Lab Score is 92/100, based on 5 tests.
What this means for you. Category wins matter more than the overall score when your driving is weighted toward one condition — a wet-climate commuter should follow the wet braking column, while a high-mileage driver should follow wear and rolling resistance. Also check that both tires are actually offered in your size and load rating: performance can shift between sizes, and availability differs between the European and North American markets.
Verdict
The Michelin Primacy 4 is the stronger all-round choice, leading in wet and Tire Lab Score. The Semperit SpeedLife 2 still wins on efficiency, making it the right pick if that matters most to you.
Which one should you buy?
Choose Michelin Primacy 4 if
- You prioritise wet
- You prioritise dry
- You prioritise noise / comfort
- You prioritise efficiency
Test profile
| Metric | Michelin Primacy 4 | Semperit SpeedLife 2 |
|---|---|---|
| Segment | Touring | Touring |
| Type | Summer | Summer |
| Tests used | 24 | 5 |
| Best rank | #1 | #1 |
| Avg rank | 6.0 | 12.0 |
| Latest test | 2022 | 2020 |
| Tire Lab Score | 94.6 | 91.9 |
Tire Lab Score
Michelin Primacy 4
Semperit SpeedLife 2
Performance overview
Category-by-category results
| Category | Michelin Primacy 4 | Semperit SpeedLife 2 | Winner |
|---|---|---|---|
| 💧Wet | Avg rank 5.4 768 | Avg rank 11.6 11 | Michelin Primacy 4 |
| ☀️Dry | Avg rank 5.2 755 | Avg rank 14.8 11 | Michelin Primacy 4 |
| 🔇Noise / Comfort | Avg rank 5.7 677 | Avg rank 6.0 1 | Michelin Primacy 4 |
| 📏Mileage | Avg rank 2.7 2 | Avg rank 3.0 1 | Michelin Primacy 4 |
| 🔋Efficiency | Avg rank 9.6 1 | Avg rank 6.0 | Semperit SpeedLife 2 |
Tests used in this comparison
Both tires were measured head-to-head in these 2 independent tests:
💧 Wet: Michelin Primacy 4 vs Semperit SpeedLife 2
The Michelin Primacy 4 wins this category with an average rank of 5.4, compared to 11.6 for the Semperit SpeedLife 2.
☀️ Dry: Michelin Primacy 4 vs Semperit SpeedLife 2
The Michelin Primacy 4 wins this category with an average rank of 5.2, compared to 14.8 for the Semperit SpeedLife 2.
🔇 Noise / Comfort: Michelin Primacy 4 vs Semperit SpeedLife 2
The Michelin Primacy 4 wins this category with an average rank of 5.7, compared to 6.0 for the Semperit SpeedLife 2.
📏 Mileage: Michelin Primacy 4 vs Semperit SpeedLife 2
The Michelin Primacy 4 wins this category with an average rank of 2.7, compared to 3.0 for the Semperit SpeedLife 2.
🔋 Efficiency: Michelin Primacy 4 vs Semperit SpeedLife 2
The Semperit SpeedLife 2 wins this category with an average rank of 6.0, compared to 9.6 for the Michelin Primacy 4.
Frequently asked questions
Which is better in the wet, Michelin Primacy 4 or Semperit SpeedLife 2?
Across independent wet-braking tests, the Michelin Primacy 4 ranks higher on average than the Semperit SpeedLife 2.
Which has shorter dry braking distance?
The Michelin Primacy 4 averages a better dry-braking rank than the Semperit SpeedLife 2 across the tests where both appeared.
Which tire is quieter and more comfortable?
On combined noise and comfort metrics, the Michelin Primacy 4 ranks better than the Semperit SpeedLife 2.
Which tire lasts longer?
Based on wear and abrasion testing, the Michelin Primacy 4 shows better mileage performance than the Semperit SpeedLife 2.
How many tests were used in this comparison?
Michelin Primacy 4 appears in 24 independent tests, Semperit SpeedLife 2 in 5, with 2 head-to-head tests where both were measured.
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Data aggregated from independent testing organizations including ADAC, Auto Bild, TCS, and Auto Motor und Sport. Read our methodology →