Yes, even reused water bottles make the mixture
By Gary S. Vasilash
Tires are made of lots of materials. Yes, there is natural rubber. And synthetic rubber.
There are carbon black and silica.
There are cables, both metal and textile.
And there are various chemicals added for good measure.
Continental has developed what is says is a considerably more sustainable tire, one that has more than 50% of its materials being traceable, renewable and recycled.
There are lots of organic materials, including the natural rubber from dandelions (not necessarily the ones you have in your lawn, but similar), silicate from rice husks, and vegetable oils from, well, vegetables rather than petroleum products from prehistoric plant matter and sea creatures.
Thirty-five percent of the Conti GreenConcept tire (yes, this is still conceptual; you can’t get one—yet) consists of renewable raw materials.
Then there are recycled materials, which account for about 17% of the tire. Things like the polyester recovered from PET bottles—bottles that are used for soda and water.
Another clever aspect of the tire is that it is lighter than a comparable conventional one. This helps lower the rolling resistance, and that means that less energy is necessary to turn the tires. This can mean as much of an improvement of 6% in the range of an electric vehicle.
(It knows a little more than a little about EVs as it has its tires on EVs from companies ranging from Audi to Vinfast—and, yes, Tesla.)
According to Continental CEO Nikolai Setzer, “Continental will completely convert its global tire production to the use of sustainable materials by 2050 at the latest.”
While that might seem like a long time, they’ve been making tires for some 150 years, so it is relative.