The silica in the tire's compound enhances its road gripping ability, while at the same time decreasing its overall weight. This combination eases the driving pressure off the tire and successfully reduces its rolling resistance. The rolling resistance is the driving pressure affecting the tire during the drive which determines how much energy the vehicle needs to maintain the tire's motion. The lower rolling resistance improves the vehicle's fuel consumption and CO2 emissions, making the model more fuel conscious and environmentally friendly.