Fitment Series tires are the ideal complement to each Zipp Wheel family. Specific construction that matches wide rim profiles and low tire pressure. Expanded thread coverage for better cornering and protection. Casing Geometry for accurate tire shape and width. Optimized rim and tire interface for improved aerodynamics. Goodyear Vector R Z30 NSW tire is optimized around Zipp’s 353 NSW. A Short ply construction and supple 150pti casing perfectly compliment the rim while R:Shield breaker layer provides protection for all-day riding. Z30 NSW = 280g.