What is the difference between Primacy 4 and Primacy 4St?
4 Answers
Compared with Primacy 4, Michelin Primacy 4St adopts a new tread pattern design and a new rubber compound, improving wet braking performance and rolling resistance for both new and worn tires. Below is an introduction to the tires: Functions of tires: Mainly include dry grip, hydroplaning resistance, providing comfort, reducing driving noise, impact resistance, wet grip, load capacity, handling performance, average wear, and mileage. Tire cross-section structure: It can generally be divided into four parts: tread, shoulder, sidewall, and bead. Each part has its own function. The tread mainly contacts the ground, the shoulder and sidewall provide support, and the bead contacts the wheel rim to provide sealing. Internal composition of tires: The interior of the tire is composed of multiple layers of different materials, including tread pattern, cover layer, steel belt layer, stress-absorbing rubber strip, carcass ply layer, and inner liner.
I drive a sedan and have been using Primacy 4 tires, which feel exceptionally smooth and quiet, with no skidding during rainy-day braking and no fatigue on long drives. After a friend switched to an SUV and installed Primacy 4St tires, we noticed significant differences: Primacy 4 is designed specifically for sedans, focusing on comfort and wet performance, while 4St is tailored for SUVs, featuring a sturdier carcass for higher load capacity and improved body stability during turns, especially when carrying heavy loads or on rough roads. In terms of size, the St variant supports larger wheels, making it suitable for high-ground-clearance vehicles. Fuel consumption is similar, but the St is slightly more expensive, justified by its durability and safety. If you drive a sedan, Primacy 4 is sufficient; for SUVs or off-road vehicles, 4St is the smarter choice.
Driving safety is paramount. The main differences between Primacy 4 and Primacy 4St lie in their applicable vehicle types and performance. Primacy 4 optimizes sedan comfort and wet road grip, reducing skid risks; while Primacy 4St is specifically reinforced for SUVs with enhanced load capacity and handling stability, making the vehicle less prone to rollover during sharp turns or heavy loads. For daily use, 4St better protects tires on rough roads, extending their lifespan. Though 4St is slightly more expensive, the safety investment pays off. SUV owners must choose 4St, while sedan owners can opt for Primacy 4 – never mix them for convenience to avoid safety hazards. Regularly check tire pressure to ensure optimal safety performance.
The main differences lie in tire design and application. The Primacy 4 is designed for sedans, featuring lightweight construction, low noise levels, and excellent wet braking performance. The Primacy 4 SUV is specifically tailored for SUVs, with a reinforced carcass structure for enhanced support and higher load capacity. While the tread patterns are similar, the SUV version is optimized for better handling, making it suitable for uneven road surfaces. They also differ in size range, with the 4 SUV covering larger wheel rims. In terms of overall performance, the Primacy 4 is the choice for sedans to ensure comfort, while the Primacy 4 SUV is ideal for SUVs to guarantee stability and durability. Both perform well in wet conditions.
