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

[VanJackson]

Michelin Primacy 4 and 3ST have the following differences: 1. Difference one: Michelin Primacy 4 is an upgraded product of 3ST, with the same product positioning. 2. Difference two: Compared to Primacy 3ST, thanks to the new tread design and new rubber compound, Michelin Primacy 4ST improves wet braking performance for both new and worn tires, as well as rolling resistance. The noise and comfort effects are roughly the same for both. 3. Difference three: Michelin PRIMACY 4 (Hao Yue 4) is a high-end comfort tread pattern. It is suitable for owners who prioritize safety and enjoy quiet driving; Michelin 3ST tires, fully named Primacy 3ST (Hao Yue), are characterized by driving comfort and low tire noise. They are suitable for owners who have strict requirements for comfort and tire noise during driving.

[JudeAnn]

I've used both Michelin Primacy 4 and Primacy 3 ST tires, and the main differences lie in performance upgrades. The Primacy 4 significantly reduces wet braking distance—official data claims several meters shorter. In actual rainy conditions, it provides better grip and is less prone to skidding. While the Primacy 3 ST is also durable, the 4th generation uses EverGrip technology with more advanced rubber compounds, ensuring more even wear and extending lifespan by 10,000 to 20,000 kilometers. It also offers better handling, lower noise at high speeds, and much improved comfort. Price-wise, the Primacy 4 is more expensive, but considering the enhanced safety and fewer replacement needs, I think it's worth it. In daily driving, the 4th generation responds quicker in corners, whereas the Primacy 3 ST feels somewhat outdated, especially in urban conditions. Overall, the 4 is a comprehensive upgrade, particularly with its focus on wet road performance, greatly boosting driving confidence.

[LeArthur]

As a family car owner, I used Primacy 3 ST for several years and noticed a significant improvement in comfort after switching to Primacy 4. The tire noise was greatly reduced, making the cabin much quieter during drives, and my family commented on the reduced noise during long trips. The shock absorption also improved, making bumps on the road less jarring—Primacy 3 ST felt slightly stiffer in this regard. In terms of wet performance, Primacy 4 offers stronger grip, providing a steadier feel when driving in the rain, especially when dropping off or picking up kids from school. Primacy 3 ST was decent, but Primacy 4's optimized rubber compound offers a more balanced performance, resists deformation over time, and lasts longer in terms of mileage. After installation, Primacy 4's lower rolling resistance also contributed to slightly better fuel efficiency. I recommend Primacy 4 for family use—it outperforms 3 ST in both safety and convenience, especially if comfort is a priority. While the older model may be cheaper, the advancements in technology make the overall driving experience much more relaxed with the newer version.

[SpencerDella]

From a cost-saving perspective, I've tried both tires. The Primacy 4 is more durable than the 3 ST. The rubber compound has been reinforced, giving it a longer lifespan—lasting about half a year to a year longer on average. It also has better fuel efficiency, saving some money on gas per 100 kilometers in real-world tests. The Primacy 3 ST wears out faster and needs replacement more frequently. The 4 offers smoother handling, reducing additional repair costs. Overall, the Primacy 4 provides better value for money and is worth upgrading to.