Echoing similar sentiments, Pirelli Tyres Commercial Director Akash Singh Rathore said, the company is adopting the latest trend which calls for lower usage of carbon black and more silica content do increase the fuel efficiency and reduce pollution. "Over the years, in our manufacturing plants, the usage of carbon black has significantly gone down in the tyres that are made for passenger vehicles, " he told ETAuto at the Tyre Expo here. "For commercial vehicles, we need the right amount of carbon black as those tyres need to manage the pressure of the heavily loaded vehicles, " he added.