Provided is a heavy-duty pneumatic tire 2 in which not only occurrence of a damage of CBU but also occurrence of pulling-out of a carcass ply 36 can be inhibited, and which has excellent durability. In the tire 2, beads 8 each include a cover 28 enclosing at least a part of a core 24. The cover 28 is located, between the core 24 and the carcass ply 36, in a portion at which the carcass ply 36 encloses the core 24. The cover 28 is composed of one cover ply 64 including a large number of aligned cover cords 66 and a cover topping rubber 68 covering the cover cords 66. A ratio of a distance between the cover cords 66 to an outer diameter of a carcass cord 56 is not lower than 0.35 and not higher than 0.85. A difference between a hardness of the cover topping rubber 68 and a hardness of a carcass topping rubber 58 is not less than -5 and not greater than 5.
HEAVY-DUTY PNEUMATIC TIRE
SCHWERLASTLUFTREIFEN
PNEU POUR FONCTIONNEMENT INTENSIF
2021-03-17
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |