A tire containing a carcass ply formed along a tread portion, a shoulder portion and a sidewall portion. The carcass ply is reinforced by a belt ply and a band ply and the belt ply includes a fold-back portion. A buffer layer is formed between the belt ply and the band ply. A dimension (SW) of the inner end of the fold-back portion is set to be 20% to 40% of a tread width (TW). A width (JW) of the band ply is set to be 20% to 65% of the tread width (TW). A dimension of the overlap of the fold-back portion and the band ply is set to be equal to or smaller than 15 mm.