Patent ID: 8770242

Claim:
A tire comprising: an envelope comprising rubber, the envelope defining an airtight internal annular volume subjected to an inflation pressure during operation, the envelope comprising two sidewalls and a crown joined to each of the two sidewalls, the crown comprising a tread and an outer annular band; at least one inner annular band arranged concentrically inside of and at a distance from the crown; and a pressurized supporting structure at least partially inside the annular volume, the supporting structure connecting the outer annular band and the inner annular band, the supporting structure comprising a plurality of radial partition walls dividing the annular volume into a plurality of compartments that follow one another in a direction tangential to the tire, the two sidewalls being connected to or integral with the supporting structure; wherein the inner annular band and outer annular band are airtight and the two sidewalls each comprise airtight lateral walls joined in an airtight manner to the outer and inner annular bands to define said airtight annular volume; and wherein the lateral walls comprise a closed-cell foam bonded to the inner annular band, the outer annular band, and the radial partition walls.