Anello battistrada per pneumatico a battistrada separato dalla carcassa

摘要

A tread ring for removable tread tires which is provided with a tension-resistant armor formed by a helically wound metal cord having coils disposed substantially parallel to the mid-circumferential plane of the tire. This structure is provided with layers disposed radially inwardly and outwardly of the armor. The layers embody metal cords disposed parallel to one another in each layer and extend along two directions crossed relative to the mid-circumferential plane of the tire. The ratio between tensile strength of the layers and the armor is greater than 0.3 and less than 1.