Michelin Primacy 4 vs Westlake Z 107

Michelin Primacy 4 vs Westlake Z 107: 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 Westlake Z 107 appear in 25 tests, though they have not yet met head-to-head in the same test. 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, efficiency. Its overall Tire Lab Score is 95/100, based on 24 tests.

How the Westlake Z 107 performs. It does not lead any single category outright in this matchup. Its overall Tire Lab Score is 74/100, based on 1 test.

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.