The majority of inner tubes will be made of butyl rubber. It’s the least expensive material and also the most robust. A butyl tube will be black and is repairable with a standard puncture kit if you get a flat.
On June 6 this year, Michelin tires listed PS4 SUV tires in China, and held a grand experience event in Shanghai. Everyone has heard the name of PS4 more or less, and a few friends around me want to change their cars to double "running shoes".