Tire having a load index LI, as defined in the ETRTO Standards Manual 2010, lying in the range between 65 and 105. The tire comprises a tread and an under layer (48) extending over the whole width of the tread and having an average radial height greater than 20% of the average radial height of the tread and a maximum value of tan at 23 C. and 10 Hz less than the corresponding value of the tread. Radial carcass reinforcement (60) extends from the beads across the sidewalls as far as the crown. The tire has an outside diameter OD and a nominal section width SW, as defined in the ETRTO Standards Manual 2010, that satisfy the following inequality: OD/SW>0.00082641 LI.sup.2+0.11266 LI0.185.

The invention relates to a tire having four treads distributed equidistantly on the external part of the body or carcass, which allow the tire to be deflated and rotated in order for a new tread to be placed in contact with the ground when the current tread has been subjected to heavy wear, without the tire having to be replaced. The invention is advantageous for the tire owner since with just a small increase in outlay the owner is guaranteed a tire that will last longer and that can be used for an increased number of kilometers of cycling.

The invention relates to a tire having four treads distributed equidistantly on the external part of the body or carcass, which allow the tire to be deflated and rotated in order for a new tread to be placed in contact with the ground when the current tread has been subjected to heavy wear, without the tire having to be replaced. The invention is advantageous for the tire owner since with just a small increase in outlay the owner is guaranteed a tire that will last longer and that can be used for an increased number of kilometers of cycling.

A bicycle wheel including a hub and a rim coupled to the hub. The wheel also includes a cover that is coupled to rim and that defines a bead seat engageable by a tire. The rim can have a first annular feature and the cover can have a second annular feature that is complementary to the first annular feature to attach the cover to the rim.

A tire comprising a continuous channel defined by spaced apart sidewalls coupled at a first end to a bridging member and at a second end to a contact member that is coupled to a disc contact portion, said tire being formed by rotational molding of a polyurethane and configured for mounting on a wheel rim.

A tire comprising a continuous channel defined by spaced apart sidewalls coupled at a first end to a bridging member and at a second end to a contact member that is coupled to a disc contact portion, said tire being formed by rotational molding of a polyurethane and configured for mounting on a wheel rim.

An assembly (1) comprises: a first structure (10) formed by first filamentary elements (15), a second structure (12) formed by second filamentary elements (16), a supporting structure (14) comprising supporting filamentary elements linking the first filamentary elements (15) and the second filamentary elements (16), and at least one filamentary securing element (18) interlaced with the first filamentary elements (15) and the second filamentary elements (16), one of the ends (18a, 18b) of the securing element (18) being free to slip relative to the first and second filamentary elements (15, 16).

An assembly (1) comprises: a first structure (10) formed by first filamentary elements (15), a second structure (12) formed by second filamentary elements (16), a supporting structure (14) comprising supporting filamentary elements linking the first filamentary elements (15) and the second filamentary elements (16), and at least one filamentary securing element (18) interlaced with the first filamentary elements (15) and the second filamentary elements (16), one of the ends (18a, 18b) of the securing element (18) being free to slip relative to the first and second filamentary elements (15, 16).