GOODYEAR PEAK ULTIMATE 700x40 BLACK FOLD TC/DAT/MWL/E25A round profile, closely spaced tread, and supple casing contribute to Peaks low rolling resistance, while ample traction and braking performance are delivered thanks to siping on every knob and its multi dimensional Dynamic A T compound ULT Lightweight casing fabric utilizing smaller thread fabric. This casing uses less rubber making the tire more supple and faster rolling, with improved traction DAT Dynamic all terrain compound providing excellent