The D401 is the only tire approved by Harley-Davidson for its cruiser models. An advanced tread pattern and specifically formulated compound to deliver outstanding grip in wet or dry weather- while delivering long tire life. All D401 tires use bias or bias-belted construction and incorporate a computer-optimized tread profile to reduce cupping for even wear. The Dunlop Harley-Davidson Tire Series D401 is available in 150/80 B16 wide tire size for the 2002 - 2004 Dyna models.