| 摘要 |
A radial tire for a truck and a bus is provided to reduce separation phenomenon between layers constituting the tire by installing a wave-shape section at a bead section that is rarely deformed by air pressure. A radial tire for a truck and a bus comprises a tread(1), a sidewall(2) and bead sections(3,31). A cacas(4) is installed between the bead sections(3,31). The code of the cacas(4) is made from a wire. A part of the cacas code has a wave shape. The wave-shape section formed in the cacas code has a length within the range of 20mm to 30mm. The waveform direction of the cacas code is horizontal to a cacas surface or is perpendicular to the cacas surface. The wave-shape section has an amplitude twice or three times as large as the diameter of the cacas wire.
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