| 摘要 |
PURPOSE:To improve resistance to weather without impairing resistance to external impact by using foamed rubber which contains independent foams, the diameter of which is specified, by a specified percentage as rubber forming the side wall of a tire. CONSTITUTION:This pneumatic tire is composed of a tread section 1, a side wall 2 made of foamed rubber, and a pair of bead sections 3. Formed rubber consisting of the side wall 2 is composed of what includes independent bubbles, an average diameter of which is 5-100mum, and its extent of foaming Vs is set at a range of 1-80%. And what is blended with natural rubber and rigid rubber is used as rubber to be used for said foamed rubber. The thickness of a foamed rubber layer is preferably more than 50% of that of the side wall section.
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