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The D401 is the only tire approved by Harley-Davidson for its cruiser models. An advanced tread pattern and specifically formulated compound 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. Advanced tread pattern for better grip in wet or dry conditions Extremely durable Computer-optimised tread profile reduces ‘cupping’ for even wear