NON-PNEUMATIC TIRE ASSEMBLY

The present invention is directed to a non-pneumatic tire assembly comprising a radially outer tread band, a radially inner hub portion, and a supporting portion circumferentially supporting the tread band on the hub portion, wherein the supporting portion comprises at least one circumferential row of spokes, extending from a radially outer annular portion of the supporting portion to the radially inner hub portion. The row of spokes further comprises a plurality of radially inwards protruding and axially extending anchoring portions being provided along a circumferential direction, wherein the hub portion has a plurality of axially extending anchoring slots for axially receiving and locking the anchoring portions against movement in a radial direction of the tire assembly. At least one of a radial thickness and a circumferential width of at least one of the anchoring portions and of a respective anchoring slot tapers along an axial direction.