What is the difference between Primacy 4 and Primacy 4St?

[OTessa]

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.

[OElle]

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.

[OAshley]

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.

[DiAmelia]

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.

[DiJudah]

I particularly value the driving experience. The Primacy 4 offers first-class shock absorption on sedans, with almost zero vibration and low noise, making long-distance driving comfortable. The Primacy 4 SUV is designed for SUVs, maintaining high comfort while being slightly firmer to support the body, ensuring stability and no bumps during sharp turns. On wet roads, the 4 performs slightly better, while the SUV version balances well on rough terrain. If you often carry passengers or drive in rural areas with an SUV, the 4 SUV is the ideal balance. Both have similar fuel consumption and replacement intervals, but choosing based on your vehicle type can enhance the overall comfort experience.

[EliasFitz]

Considering cost-effectiveness and usage, the Primacy 4 offers an affordable price, comprehensive performance for sedans, with excellent wet road safety and comfort; the Primacy 4 SUV is slightly more expensive but enhances durability for SUVs, with stronger load capacity and potentially longer lifespan. For compact SUV drivers or occasional heavy loads, the 4 SUV provides better damage resistance with minimal difference in urban commuting, but it's more worthwhile for frequent rough road conditions. In terms of lifespan, the SUV version is more wear-resistant, saving replacement costs. It's recommended that sedan owners opt directly for the Primacy 4, while SUV owners should prioritize the Primacy 4 SUV to maximize safety and cost-effectiveness by matching the tire to the vehicle type.