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

[StBrielle]

The noise levels and comfort performance of Michelin Primacy 4 and 3ST tires are generally comparable. The differences are: Compared to the 3ST, Michelin Primacy 4 adopts a new tread pattern design and new rubber compound, improving both new and worn tire performance in wet braking and rolling resistance. Related information: 1. Introduction: Michelin was founded in 1889 in Clermont-Ferrand, France. Over more than 100 years, Michelin has undergone continuous innovation and development. It now operates business centers across five continents and has R&D centers in Europe, North America, and Asia. 2. Expansion: Michelin tires are marketed in over 170 countries worldwide. Michelin employs 113,529 people globally with 69 manufacturing plants and 2 rubber plantations. Annual production includes 190 million tires, 17 million maps and guides. Michelin is one of the world's top three tire manufacturers.

[Camilla]

Last year, I replaced the Primacy 3st on my old car with Primacy 4, and the difference is quite noticeable. The 3st already provided a very comfortable ride, especially with low noise on city roads, but it felt a bit floaty during braking in the rain, which was nerve-wracking. After switching to Primacy 4, the wet grip improved significantly—it stops firmly even in heavy rain. The overall noise reduction is better too; on highways, tire noise is almost inaudible, making long drives much easier on the ears. Additionally, the durability of the 4 is far superior. I've driven over 20,000 kilometers with minimal visible wear, and it looks like it could last an extra year, saving money and hassle. I’d recommend it for those who frequently drive long distances or live in rainy areas. It’s a comprehensive upgrade over the 3st, and the slightly higher price is well worth it.

[Terrance]

As a car enthusiast, I've researched this series of Michelin tires. The Primacy 3 ST is a classic model, focusing on comfort and low fuel consumption, but its wet braking performance is average, with test data showing an average stopping distance about one meter longer. The Primacy 4 is the new flagship, featuring a new rubber compound design that reduces wet braking distance by 15%, significantly improving safety in rainy conditions. It also lowers noise levels by 2 decibels, making highway driving quieter. The rolling resistance is further reduced, offering slightly better fuel efficiency. The 3 ST has been discontinued, and you might find some second-hand bargains on the market. The Primacy 4 is the future mainstream with more balanced performance. After comparing during the upgrade, if the budget allows, go straight for the Primacy 4—it's worth every penny.

[LeElliana]

Safety and convenience are the top priorities for daily commuting by car. I used the Primacy 3 ST for over a year—it's usually quiet with good shock absorption, but I'd get nervous on rainy days as the brakes felt sluggish and prone to skidding. After switching to the Primacy 4, the wet grip improved significantly. Braking in the rain is much quicker now, making outings more reassuring. It also lasts considerably longer; after a year of use, there's no sign of needing a tire change, proving more wear-resistant and time-saving than the 3 ST. Though the Primacy 4 is slightly pricier, considering the reduced accident risk and maintenance frequency, it's well-suited for urban commuters.