Bridgestone Ecopia EP500 All-Season Tire - 175/60R19 86Q . Designed specifically to increase fuel economy, the Bridgestone Ecopia EP500 is a touring tire with low rolling resistance that drivers of hybrid and electric vehicles are looking for in order to maximize fuel tanks and battery ranges. An OE tire for BMW electric cars, its narrow, asymmetrical tread imprint retains traction while creating as little drag as possible. For highway cruising or city commuting, the Bridgestone Ecopia EP500 is one of the most fuel-efficient tires available from Bridgestone.