Bridgestone's Battlax BT46 replaces the iconic Battlax BT-45. The iconic BT-45 was upgraded with a new modern design that increases wet performance with no impact on its well-known dry handling performance and high mileage. RC Polymer technology optimizes the distribution of silica in the rubber compound and improves tread flexibility, allowing greater contact with the road surface in both hot and cold conditions. The reduction in molecular friction also improves rolling resistance, therefore increasing fuel economy.