The Dunlop D401 is the approved Harley-Davidson cruiser tire. An advanced motorcycle tire tread pattern and specifically formulated Dunlop motorcycle tire compound deliver outstanding grip in wet or dry weather, while delivering long tire life. All Dunlop D401 motorcycle tires use bias or bias-belted construction, and incorporate a computer-optimized motorcycle tire tread profile to reduce cupping for even wear. The classic Dunlop D401 Motorcycle Tires feature and advance designed tread pattern that works well in wet or dry conditions. Using a specifically formulated tire compound the Dunlop D401 delivers outstanding grip while still giving you the long mileage you have come to expect from Dunlop.