Long March LM278S 385/65 R22,5 164K (Рулевая ось)

In the field of long-haul transportation, the steering axle is the command center of the vehicle. Its performance depends not only on safety but also on the economic efficiency of the entire route. The Long March LM278S tire is a specialized solution for the steering axles of tractors and semi-trailers, designed for intensive operation on high-quality roads over medium and long distances.

Five ribs of stability

The manufacturer has chosen a classic but technically perfect scheme for building the tread. The pattern is based on five massive longitudinal ribs. This is not just a tribute to tradition, but a calculated geometry aimed at solving three key problems:

- minimizing rolling resistance - the solid longitudinal strips minimize deformations in the contact patch;
- massive ribs work as guiding planes, providing exceptional directional stability. The vehicle clearly holds a straight line, without requiring constant steering, which reduces the load on the driver on long roads;
- the wide support surface prevents rapid wear of the tread, characteristic of the steering axle, where the tires work in a mode of constant sliding friction when turning.

Lamellas with a double vector

Wet asphalt is the main challenge for the steering tire. Loss of traction on a puddle or in the rain can lead to uncontrolled skidding. In this model, this problem is solved comprehensively. In the three central ribs, a system of oppositely directed lamellas is applied. These microscopic cuts have sharpened, self-locking edges. When braking, they open, creating a "scraper" effect that literally cuts through the water film. This allows for intense braking where ordinary tires start to slip. At the same time, four deep longitudinal grooves are provided in the tread. Their hydraulic calculation is such that they instantly drain water, preventing the "floatation" of the tire.

Shoulder armor and wear geometry

The steering axle often suffers from "saw-tooth" wear of the shoulder zones, which causes noise and vibration. To avoid this, the design of the shoulder blocks has been strengthened. They are made as massive and rigid as possible, which prevents them from "spreading" under the action of lateral forces during maneuvering. The special structure of the lamellas and the optimized pressure in the contact patch force the tread to wear exceptionally evenly. The tire maintains its geometric profile over a long period.

Key features of Long March LM278S:

- the five-rib design provides unparalleled directional stability and reduces rolling resistance;
- the oppositely directed edges in the central ribs guarantee reliable traction and a short braking distance on wet roads;
- 4 deep channels effectively evacuate water and dirt, ensuring safety in the off-season;
- the reinforced design and optimized compound prevent uneven wear.