Pneumatic tyre comprising: a toroidal carcass, which is made up of a unique and single body ply partially collapsed onto itself and therefore having two lateral flaps, in each of which an edge of the body ply rests against an intermediate portion of the body ply itself; two annular beads, each of which is surrounded by the body ply and has a bead core and a bead filler; an annular tread; a tread belt comprising at least one body ply; a pair of sidewalls arranged axially outside to the body ply between the tread and the beads; a pair of abrasion gum strips arranged axially outside to the body ply, radially more to the inside of the sidewalls, and at the beads; and a transponder which is arranged in contact with the body ply at a flap of the body ply and is located radially between an edge of the body ply and a radially outer edge of the bead filler; the pneumatic tyre is characterized in that: each flap of the body ply terminates radially below the tread ply in such a way that in each flap of the body ply the edge of the body ply is in contact with the tread ply; the transponder is axially arranged on the outside of the flap of the body ply, is axially inside in contact with a corresponding portion of the body ply, and is axially outside in contact with a corresponding portion of the sidewall;a first radial distance greater than 10 mm is provided between a radially outer end of the transponder and the edge of the body ply; and a second radial distance greater than 10 mm is provided between a radially inner end of the transponder and the radially outer edge of the bead filler. a toroidal carcass, which is made up of a unique and single body ply partially collapsed onto itself and therefore having two lateral flaps, in each of which an edge of the body ply rests against an intermediate portion of the body ply itself; two annular beads, each of which is surrounded by the body ply and has a bead core and a bead filler; an annular tread; a tread belt comprising at least one body ply; a pair of sidewalls arranged axially outside to the body ply between the tread and the beads; a pair of abrasion gum strips arranged axially outside to the body ply, radially more to the inside of the sidewalls, and at the beads; and a transponder which is arranged in contact with the body ply at a flap of the body ply and is located radially between an edge of the body ply and a radially outer edge of the bead filler; the pneumatic tyre is characterized in that: each flap of the body ply terminates radially below the tread ply in such a way that in each flap of the body ply the edge of the body ply is in contact with the tread ply; the transponder is axially arranged on the outside of the flap of the body ply, is axially inside in contact with a corresponding portion of the body ply, and is axially outside in contact with a corresponding portion of the sidewall;a first radial distance greater than 10 mm is provided between a radially outer end of the transponder and the edge of the body ply; and a second radial distance greater than 10 mm is provided between a radially inner end of the transponder and the radially outer edge of the bead filler. each flap of the body ply terminates radially below the tread ply in such a way that in each flap of the body ply the edge of the body ply is in contact with the tread ply; the transponder is axially arranged on the outside of the flap of the body ply, is axially inside in contact with a corresponding portion of the body ply, and is axially outside in contact with a corresponding portion of the sidewall;a first radial distance greater than 10 mm is provided between a radially outer end of the transponder and the edge of the body ply; and a second radial distance greater than 10 mm is provided between a radially inner end of the transponder and the radially outer edge of the bead filler.