A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass, a belt, and a bead filler rubber, wherein the bead filler rubber in an assembly of the tire and an approved rim has a height lower than the height of a rim flange, and a turnup portion of the carcass has a height not less than 0.5 times a section height of the carcass from a rim size line and extends over a maximum width position of the carcass and in parallel to a main body of the carcass outward from a taper end of the bead filler rubber, and a pair of sidewall reinforcing layers are arranged along an outside of the turnup portion to extend from near to the taper end of the bead filler rubber up to at least near to an end of the belt.