Abstract: The invention provides a ground engaging element for a wheel or endless track which element has a hollow longitudinal body of flexible material to extend across the wheel or track. The hollow body has a pair of longitudinal side walls and an outer longitudinal face for contacting the ground as well as first and second mounting flanges. The first mounting flange extends outwardly of the hollow body and has a mounting face to contact the wheel or track base. The second mounting flange is disposed between the side walls and has a face disposable in spaced relationship to the base whereby the first mounting flange of a similar, neighboring ground engaging element can be received under the face of the second mounting flange. Neighboring ground engaging elements can be mounted on the wheel or track with the side walls in contact to provide mutual support under ground engaging loads.

Abstract: A tire comprising a body constructed to deform resiliently under load and a tread provided on the body. The tread comprising a plurality of raised portions (29) disposed in circumferential relationship and defining grooves (49) therebetween. Each raised portion (25) comprising a first central section (27) and a pair of lateral sections (29) each extending outwardly from the central section towards one side of the body. The lateral sections (29) define a V formation and the first central section (27) extends from the V formation in a direction away from the outer ends of the lateral sections (29) and towards the V formation if the next adjacent raised portion. The body may be defined by a plurality of segments (11) individually mountable onto a base.