PNEUMATIC TIRE

Provided is a pneumatic tire which is improved in a rolling resistance and a ride comfort in normal running without damaging a run flat durability. It is a pneumatic tire provided with a bead core, a carcass layer, a tread rubber layer, an inner liner, a side reinforcing layer and a bead filler, characterized by using a rubber composition (a) which contains (A) a rubber component and (B) a filler and which has a dynamic storage modulus (E') of 10 MPa or less at a dynamic strain of 1 % and 25°C and a value of 5.0 or less in a loss tangent tan ´ at 28 to 150°C in the physical properties of the vulcanized rubber.