Abstract: A tire whose inner wall is covered, at least in the zone of the crown and of the shoulders, with a self-sealing product which is pasty at the temperature of the tire in service and which, seen in meridian section, is contained between two layers of elastomer and is divided transversely by partitions of elastomer, is improved due to the fact that the self-sealing product forms at least one continuous ribbon, one end of which is located in the region of one shoulder while the other end is located in the region of the other shoulder of the tire.

Abstract: A spare tire which is expandable by inflation, having a radial carcass reinforcement anchored to at least one bead ring in each bead and having a tread reinforcement formed of at least two plies of cables which are parallel in each ply and crossed from one ply to the next and form acute angles with the longitudinal direction of the tire, is improved due to the fact that the plies are composed of cables whose elasticity decreases as the inflation pressure increases and as the tire passes from the collapsed condition to the expanded condition ready for travel.

Abstract: A pneumatic tire having, between two vulcanized elastomeric partitions, a layer of a sealing mixture arranged on the inner wall of the cavity of the tire, at least below the crown and from one shoulder to the other, is improved due to the fact that the layer of sealing mixture has a base of at least one vulcanizable elastomer of low molecular weight, preferably less than 30,000, contains at least one component of a vulcanization system for the vulcanizable elastomer and has an apparent viscosity of between 10.sup.3 and 10.sup.7 N/s/m.sup.2 at 60.degree. Celsius measured with a Weissenberg rheogoniometer at a shear velocity gradient of 10.sup.-2 to 10.degree.s.sup.31 1 ; at least one other component which forms the vulcanization system with the component contained in the sealing mixture being contained in a dispersion within the cavity of the tire.

Abstract: A tire whose inner wall is provided, below the crown of the tire and at least from one shoulder to the other of the tread, with a lining containing at least one means for sealing puncture holes is improved due to the fact that the lining comprises at least one layer of a vulcanizable sealing mixture separated by a vulcanized elastomeric partition from at least one layer of a vulcanizing mixture capable of vulcanizing the vulcanizable sealing mixture, each of the layers containing between 20% and 100% by weight of an elastomer of low molecular weight, preferably less than 30,000.

Abstract: A pneumatic tire whose inner wall is provided beneath the crown with a lining which extends at least from one shoulder to the other of the tread and comprises a layer of a sealing mixture capable of flowing into a puncture hole, the layer being covered radially inward by a vulcanized elastomeric partition, is improved due to the fact that the layer of sealing mixture has a base of at least one elastomer of low molecular weight, preferably less than 30,000, mixed with at least one thermosetting resin, and due to the fact that at least one cross-linking agent or hardener for the thermosetting resin is isolated from the layer of sealing mixture by means of a vulcanized elastomeric partition arraged radially inward of the layer of sealing mixture.

Abstract: A tire having a tread, sidewalls and an inner wall, said inner wall having, at least over the portion corresponding to the width of the tread, a layer of a self-sealing agent, a layer of elastomer arranged radially inward of the layer of self-sealing agent and partitions defining volumes of self-sealing agent arranged between said layer of elastomer and the inner wall of the tire is improved due to the fact that the transverse distances measured along the inner wall of the tire between successive partitions decrease from the tread in the direction towards the sidewalls of the tire.