Is Michelin Primacy 4 the same as 4st?

[NolanRose]

Michelin Primacy 4 is not 4st. The differences between Michelin Primacy 4 and 4st are as follows: 1. Different drainage performance: Michelin Primacy 4 features a new tread design through Evergrip technology, providing over 50% more drainage space compared to 3st, which significantly reduces hydroplaning with its excellent drainage capability. 2. Different rubber compound: Compared to 3st, Michelin Primacy 4 adopts a new tread design and a new rubber compound, improving both wet braking performance and rolling resistance for new and worn tires. 3. Different safety performance: Due to the new rubber compound, Michelin Primacy 4 demonstrates outstanding braking performance, particularly excelling in wet braking. Official data shows that Michelin Primacy 4 outperforms 3st by a full 2.4m in wet braking distance. Considering that even 0.1m can potentially prevent a major accident, this significantly enhances driving safety to some extent.