To provide a low noise tire with an excellent maneuvering stability on a wet road surface, without reducing the maneuvering stability on a dry road surface.

In a pneumatic tire with the flatness ratio less than 50%, furnishing a radial carcass, a belt provided to a crawn part, and a tread 1, a central peripheral direction wide groove 2 extending in the peripheral direction, and having a large section area, is provided at the pattern center of the tread, an in-groove rib 3 extending in the peripheral direction, or extending practically continuously in the peripheral direction, is formed to the central peripheral direction wide groove 2, and the outer side surface of the in-groove rib 3 in the radial direction is positioned at the inner side in the radial direction inner than a tread outer outline, in the condition filling no inner pressure to a tire, and it is grounded in the condition filling the air pressure corresponding to the maximum loading capacity to the tire and loading 60% of the maximum loading capacity.