EPA SmartWay Verified Tire, No. RR680.
Photo credit: Double Coin Holdings, LTD.
Double Coin's Optigreen tire, No. RR680, has met the low rolling resistance tire performance criteria for EPA SmartWay for new tires in both the steer and drive positions. It helps assist users in reducing emissions and increasing fuel mileage. In addition to the RR680, the OptiGreen Series includes Double Coin's FR605, FD405, FT105, FT125 and the FD425.