Why Are Low Rolling Resistance Tires Not Popular?
1 Answers
Currently, low rolling resistance tires are still relatively popular. Here is relevant information about low rolling resistance tires: 1. Vehicle fuel economy is becoming increasingly important: On one hand, to conserve fuel resources, and on the other hand, to promote technological progress in the automotive industry and improve the energy-saving standard system for heavy-duty commercial vehicles, China implemented the first-phase fuel consumption standard for heavy-duty commercial vehicles in 2012, the second-phase standard in 2014, and the third-phase standard in 2019. Each update to the fuel consumption standard has tightened the fuel consumption limit by more than 10% compared to the previous phase, significantly reducing vehicle fuel consumption and increasing the demand for fuel-saving performance. Moreover, there will be a fourth-phase fuel consumption standard in the future. 2. Low rolling resistance tires excel in fuel-saving performance: Tire rolling resistance, also known as rolling friction, includes static friction and elastic losses. It is closely related to road type, tire structure and materials, vehicle load, etc., and is one of the three key performance indicators of tires. The three key performance indicators of tires are wear resistance (service life), rolling resistance (rolling friction), and wet grip (traction), known as the "Magic Triangle" in the tire industry. Often, improving one or two of these performance aspects leads to a loss in the others, making it difficult to achieve all three simultaneously. In Europe, tire rolling resistance levels are classified into seven grades: A, B, C, D, E, F, and G. In China, commonly used tires include large-pattern off-road tires, regular tires, and low rolling resistance tires, catering to different usage scenarios.
