These dBoots Back-Flip LP tires and inserts provide optimum performance on a wide range of surfaces.Features:Aggressive tread pattern for excellent traction on all off-road surfaces - Durable material compound for long-lasting performance - Medium compound foam inserts included SPECIFICATION 3.8" (96mm) Bead diameter 3.03" (77mm) Width 6.10" (155mm) Outer diameterIncludes:2 x dBoots Back-Flip LP Tire 2 x Foam InsertRequires:Wheels such as #AR510113