Haejin Lim

Lim studies tire rubber materials in the R&D division of Hyundai Motor Company, before this, working in the process research team of Hankook Tire Company, studying the mixing process. As a member of the chassis material development team, Lim has worked on tire quality analysis and rubber material characteristics for seven years, in addition, studying tire durability and rubber wear characteristics. Lim has recently been working with Kumho Tire Company on low-rolling-resistance tires.

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Presentation

Development of new materials for extreme-low-rolling-resistance tire

At the tire’s point of view for carbon emissions, the effect of the use stage is very significant. When a tire's rolling resistance is reduced, carbon emissions may be reduced by improving energy efficiency in this stage. In this study, an extreme level of low rolling resistance was developed by applying new materials in the tire. The impact of tread compounds and reinforcement components (belt, carcass) was studied through vehicle evaluation. However, the LRR tire had performance trade-offs such as R&H, so further efforts were made to improve it. In conclusion, the carbon reduction effect of the LRR tire was confirmed.