Tire tread with a band layer

A non-pneumatic tire defining axial, radial, and circumferential directions, the non-pneumatic tire comprising:

• an inner ring having an axis of rotation;
• an outer ring coaxial with the inner ring;
• a support structure extending from the inner ring to the outer ring;
• a circumferential tread extending about the outer ring, the circumferential tread including an annular band layer constructed of a single metal material, wherein the band layer includes:
• a first face and a second face opposite the first face, and
• a first axial edge and a second axial edge, the first and second axial edges spacing the first face from the second face,
• wherein at least one of the first edge and the second edge is a continuously curved surface that spans between the first face and the second face, and
• wherein the continuously curved surface has a semi-circle cross section, with the semi-circle defined by a radius that is one-half a thickness of the annular band layer.