What are the differences between Michelin Primacy 4 and 3ST tires?

2 Answers
DelAriana
07/24/25 8:58pm
The differences between Michelin Primacy 4 and 3ST tires 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, significantly reducing hydroplaning with excellent drainage. 2. Different rubber compound: Compared to 3ST, Michelin Primacy 4 adopts a new tread design and new rubber compound, improving wet braking performance and rolling resistance for both new and worn tires. 3. Different safety performance: Due to the new rubber compound, Michelin Primacy 4 offers superior braking performance, especially in wet conditions. Official data shows that Primacy 4 outperforms 3ST by a full 2.4m in wet braking distance.
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VanLila
08/10/25 2:28pm
I usually enjoy researching car accessories. The Primacy 4 is an upgraded version of Michelin's 3ST. The main difference lies in the tread compound, where the 4th generation uses a new high-silica formula, improving wet grip and braking performance, especially making it safer during the rainy season. The tread pattern has been redesigned with more longitudinal grooves, enhancing drainage while reducing noise and vibration. Additionally, the 4th generation offers improved durability, with a more optimized overall tire structure that can withstand more complex road conditions. From what I understand, the Primacy 4 is more suitable for urban driving that prioritizes comfort and safety, while the 3ST, although also good in terms of quietness, performs slightly weaker in wet conditions. It's recommended to consider local weather conditions when changing tires. If you can use them for a few more years, upgrading to the 4th generation is more cost-effective, after all, driving safety comes first.
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