| 摘要 |
A pneumatic tire has at least the outermost one of a plurality of rubber layers between a carcass and tread reinforced with a plurality of steel cords. Each of these steel cords is a single-strand steel cord with an elongation at break of not less than 4% and at least one of its component wires does not form a common circumcircle with the remaining wires. The curve circumscribing cross sections of the constituent wires of each steel cord is not a true circle. High resistance to nail penetration is assured by arranging the steel cords in such a manner that, for a large majority of steel cords, the direction of maximum offset span of the circumscribing curve is substantially coincidental with the width direction of thec outermost layer of rubber.
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