Page 28 - 《橡塑技术与装备》英文版2025年12月

HINA R&P TECHNOLOGY AND EQUIPMENT

Table 2 Test conditions for high-speed performance of 5 Conclusion
passenger car tires with speed symbol Y 235/45R18 is a typical specification for mid-to-high-end
Trial phase Test Speed / (km·h ) Test Duration/min
-1
1 0~260 10 passenger car tires. The product developed this time meets
2 260 20 the design goals and national standards in terms of inflated
3 270 10
4 280 10 outer edge dimensions, strength performance, bead unseating
5 290 10 performance, durability, high-speed performance, and rolling
Note: Inflation pressure is 360 kPa, and rated load is 750 kg
resistance, satisfying the requirements for safety, durability,
4.6 Rolling resistance and energy efficiency in tire use. The beautiful pattern design
According to the provisions of GB/T29040, the rolling can meet consumers' demands for a "personalized and high-
resistance of the test tires was measured, and their rolling end" appearance. The sales of this product can enhance both
resistance coefficient was calculated. The determination value our company's market competitiveness and economic benefits,
was calculated according to the provisions of GB/T29042. The making it a mature product that aligns with the current trend of
average rolling resistance coefficient of the finished tires is 6.28 N·kN, electrification.
which meets the development target requirements for electric
car tires.

51，No.12
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·22· Vol.51 卷 第 12 期
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