Like other tire manufacturers, Goodyear has invested a lot of time and effort into creating wheels with reduced torque resistance, which can reduce fuel consumption for traditional cars and a number of electric vehicles. During the development process, the idea came to the engineers: why not force the tires to produce electricity?
The new BH-03 tires are based on regenerative braking, in which the consumed energy is captured and returned to the battery for the next cycle over and over.
It was intended to test two theories. The first was the use of piezoelectricity, and more specifically, the electronic charge that arises in materials under compression or friction. After all, this kind of movement is just characteristic of tires. This property of piezoelectric materials (quartz, ceramics and some types of salt) is already used by people, for example, in lighters. In this case, the scientists decided to add elasticity to the materials by combining them with rubber.
The second theory is based on thermoelectricity. Here we are talking about the occurrence of electrical voltage with variations in temperature. Tires get hot from the sun and also from spinning on the move. According to the second assumption, it is necessary to investigate materials such as bismuth telluride and tin selenide. Again, in combination with rubber, because no innovation should come at the expense of elasticity and durability.
So far, in many ways, these are only theoretical developments. Engineers have yet to find the materials they need, how efficiently they generate energy, and how much extra weight this will add to the tires. There is no guarantee that the BH-03 concept will hit the market. However, it is likely that in a few years, car tires will be very different from what we are used to.