A pneumatic radial tire (1) comprising a tire carcass is disclosed. The tire (1) comprises a tread portion comprising a tread (3) disposed on the tire carcass; a pair of sidewall portions (4) adjacent to the tread portion;=a carcass ply (5, PC) extending circumferentially about the tire (1) and exhibiting two ply ending portions (20), wherein each ply ending portion (20) comprises a first ply contact section (21, Si) adjacent to a ply turn-up section (22, ST), said ply turn-up section (22, ST) being adjacent to a second ply contact section (23, S2), said second ply contact section (23, S2) forming or including the end of the ply ending portion (20); and a pair of bead portions adjacent to the sidewall portions (4). Each bead portion comprises a bead core (7), one or more apex elements (6) and one of the two ply ending portions (20) of said carcass ply (5, PC). In each bead portion, the ply ending portion (20) comprised therein forms a sealed enclosure (30) containing the bead core (7), said sealed enclosure (30) exhibiting a ply-to-ply contact section (11, Sc) formed by the first ply contact section (21, Si) and the second ply contact section (22, S2), and further exhibiting a surrounding section formed by the ply turn-up section (22, ST). In each bead portion, at least one apex element (6, EA) of the one or more apex elements (6) is located axially outwards from the ply-to-ply contact section (11, Sc) and at least a portion of the axially inward surface of said at least one apex element (6, EA) is in direct contact with an axially outward surface of the ply-to-ply contact section (11, Sc).
PNEUMATIC RADIAL TIRE
RADIALER LUFTREIFEN
PNEUMATIQUE RADIAL
15.05.2024
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |