트렁크 아래 있던 스페어타이어는 어디로 사라졌을까?

Why have spare tires, once located under the trunk, gradually disappeared? In the past, it was almost taken for granted that cars contained a full-size spare or a temporary donut tire. However, if you look at new cars these days, it is not uncommon to see only a small compressor and sealant placed in that spot. At first glance, this appears to be a simple cost-cutting measure. In fact, removing the spare tire reduces weight and manufacturing costs, and allows for more flexible trunk design. However, that explanation alone is insufficient. As TPMS alerts you to tire issues in advance, repair kits and run-flat tires handle temporary responses, and roadside assistance services resolve problems on behalf of the driver, the role once held by a single spare tire has begun to be divided among various technologies and services. In this video, we examine the evolutionary process from full-size spares to temporary spares, and then to repair kits, run-flats, and roadside assistance services. Ultimately, it is not that spare tires have become unnecessary, but rather that the method of resolving flat tires has changed. If you enjoyed this video, please subscribe and like. In the next video, I will share stories about the inside of cars that you might have simply overlooked because they were so familiar. ※ The content featured in this video regarding the percentage of vehicles without spare tires, the timing of TPMS mandatory implementation, run-flat tires, and repair kits is based on publicly available data from the AAA, NHTSA, BMW Group, and the Ministry of Land, Infrastructure and Transport. References AAA — Data on the percentage of new cars without spare tires and repair kits NHTSA — U.S. TPMS mandatory implementation and related regulations Ministry of Land, Infrastructure and Transport — Data on mandatory TPMS application in Korea BMW Group — Official data regarding the Z8 and run-flat tire application Automotive & Tire Manufacturer Manuals — Conditions for using repair kits, run-flat tires, and spare tires #SpareTire #Car #Tire #RunFlatTire #TPMS #CarStories #AutomotiveHistory