A tread for a tire includes: a first tread zone extending circumferentially, continuously, and entirely around the tire, the first tread zone being formed of a first compound; a second tread zone extending circumferentially, continuously, and entirely around the tire, the second tread zone being formed of a second compound different from the first compound; and a boundary groove axially separating the first tread zone from the second tread zone, the first tread zone, the second tread zone, and the boundary groove entirely forming the tread, the boundary groove having an axial centerline disposed an axial distance from an equatorial plane of the tire. The first tread zone has a first circumferential groove and a sidewall portion defining an intermediate circumferential rib of the first tread zone and a shoulder circumferential rib of the first tread zone.

The invention relates to a commercial vehicle tire which is cold-retreadable and comprises sidewalls (5), belt plies (2a) and a profiled tread (1) with shoulder flanks (8a) located outside the ground contact area and running to the sidewalls (5), wherein a buffing indicator (9, 9, 9) for indicating the buffing depth is provided on at least one shoulder flank (8a), running around in the circumferential direction, possibly interrupted in some portions and formed by a multiplicity of elevations (10), wherein the elevations (10) have with respect to the level of the shoulder flank (8a) a maximum thickness, determined perpendicularly to this level, of 0.5 mm to 2.0 mm.

The elevations (10) of the buffing indicator (9, 9, 9) are dome-shaped and have a circular base area with a diameter of 0.5 mm to 2.0 mm.

The invention relates to a commercial vehicle tire which is cold-retreadable and comprises sidewalls (5), belt plies (2a) and a profiled tread (1) with shoulder flanks (8a) located outside the ground contact area and running to the sidewalls (5), wherein a buffing indicator (9, 9, 9) for indicating the buffing depth is provided on at least one shoulder flank (8a), running around in the circumferential direction, possibly interrupted in some portions and formed by a multiplicity of elevations (10), wherein the elevations (10) have with respect to the level of the shoulder flank (8a) a maximum thickness, determined perpendicularly to this level, of 0.5 mm to 2.0 mm.

The elevations (10) of the buffing indicator (9, 9, 9) are dome-shaped and have a circular base area with a diameter of 0.5 mm to 2.0 mm.

Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods include providing a tire tread ring having opposing side edges, arranging the tread ring in an initial ring arrangement in communication with a pressure source, and expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement. The pressure source is in communication with an outer side of the tread ring, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source. Such methods also include inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement, contracting the tread ring into an installed arrangement about an outer surface of the tire carcass, and, releasing the vacuum along the outer side of the tread ring.

Exemplary embodiments of the subject invention comprise methods and apparatus for mounting a tread ring onto a tire carcass. Such methods include providing a tire tread ring having opposing side edges, arranging the tread ring in an initial ring arrangement in communication with a pressure source, and expanding the tread ring radially outward from the initial ring arrangement to an expanded arrangement. The pressure source is in communication with an outer side of the tread ring, the tread ring being expanded by applying vacuum pressure along the outer side of the tread ring supplied by the pressure source. Such methods also include inserting a tire carcass within a central opening of the tread ring while in the expanded arrangement, contracting the tread ring into an installed arrangement about an outer surface of the tire carcass, and, releasing the vacuum along the outer side of the tread ring.

The method comprises the steps of a) forming a carcass composed of a cured rubber material and b) overmolding, on the carcass, at least one thermoplastic elastomer material in order to finish the pneumatic tire.

The method comprises the steps of a) forming a carcass composed of a cured rubber material and b) overmolding, on the carcass, at least one thermoplastic elastomer material in order to finish the pneumatic tire.

The comprises at least one module for stitching the tread and a means for moving the module vertically and horizontally. The stitching module comprises a frame which is provided with a fixed stitching assembly, equipped with spikes, and at least one mobile stitching assembly. The at least one mobile stitching assembly comprises at least one stitching plate provided at the base of same with at least one planar horizontal contact surface, from which at least two spikes protrude. The plate is arranged in a vertical guide space provided in the frame such that the spikes protrude downwards and such that it is free to move vertically in this space over a limited travel path. The device also includes a vertical movement device for moving the plate from the top downwards in this guide space and a device for locking the altitude position of the plate in this space.

A green tire includes a plurality of sheets of green rubber having a substantially circular shape, with each sheet having a tread region disposed along a circumference. A plurality of objects are sandwiched between adjacent sheets of green rubber in the tread region. Each object is constructed of a material selected from the group consisting of steel, polyester, nylon, carbon fiber, aramid, fiber glass, cotton, hemp, polyurethane and other plastic, other synthetic or natural fibers and other metal materials.

A green tire includes a plurality of sheets of green rubber having a substantially circular shape, with each sheet having a tread region disposed along a circumference. A plurality of objects are sandwiched between adjacent sheets of green rubber in the tread region. Each object is constructed of a material selected from the group consisting of steel, polyester, nylon, carbon fiber, aramid, fiber glass, cotton, hemp, polyurethane and other plastic, other synthetic or natural fibers and other metal materials.