They work together to boost the tire's grip on the road surface in various weather conditions, with additional biting edges and the compound's maintained rubber flexibility. The better year round traction eases the driving pressure off the tire, which minimizes the rolling resistance in various temperatures. The rolling resistance is the pressure affecting the tire, which determines the vehicle's needed fuel intake. As the tire decreases the rolling resistance, it optimizes the vehicle's fuel consumption and CO2 emission levels. This combination decreases the vehicle's fuel efficiency throughout the drive.