A tyre sensor device (100) comprising a connecting element (210) for connecting the tyre sensor device to a vehicle tyre, and a tyre sensor device electronics assembly (230) housed in the connecting element, wherein the tyre sensor device electronics assembly comprises a flexible printed circuit board (510) being foldable and comprising at least two printed circuit board portions (705,710,715) each having two surfaces, the at least two printed circuit board portions being suitable for the placement, on at least one surface thereof, of electronic components of the tyre sensor device, wherein said electronic components comprise at least one sensor (1125) for sensing at least one tyre parameter, said printed circuit board (510) being folded so that the tyre sensor device electronics assembly can be inserted in the connecting element with the at least two printed circuit board portions being essentially planar.