Tire with puncture resistant sidewall

This invention relates to a pneumatic rubber tire having a puncture resistant rubber sidewall. The said tire sidewall comprises an outer, visible annular configured sidewall rubber layer (6) and an inner (non-visible) annular configured sidewall rubber layer (7) integral with and underlying said outer sidewall rubber layer, wherein said inner sidewall rubber layer contains a dispersion of short fibers, wherein said short fibers are substantially aligned in parallel relationship to each other and extend substantially in the circumferential direction.