Abstract: An elastic member 11 positioned between an inner surface of a casing 2 and a front face of a pressure sensing portion 8 of a pressure sensor 1 reduces a possibility of liquid and foreign matters in a tire directly reaching the pressure sensing portion 8. The elastic member also increases adhesiveness between the pressure sensing portion 8 of the pressure sensor 1 and a labyrinth structure and further prevents a potting agent 9b from flowing into the sensing portion 8. Moreover, the elastic member 11 is a member constituting at least a part of the labyrinth structure, so that it does not need that a wall is provided on the pressure sensor 1 and a dedicated seal member is provided on the pressure sensing portion 8.

Abstract: To provide a pneumatic tire in which noise can be reduced without changing the basic design of the block pattern, a chamfered portion 24 is provided at a tire widthwise-direction outer side end 18A of a leading edge 18A of a block 18. When the tire rolls and the block 18 contacts a road surface, first, with respect to the leading edge 18A, a flat portion 22 contacts the ground, and then the chamfered portion 24 contacts the ground. Because the height of the chamfered portion 24 gradually decreases towards the tire widthwise-direction outer side end, the leading edge 18A at the chamfered portion 24 gradually makes contact with the road surface, whereby force input that generates sound is dispersed in terms of input timing and it is possible to suppress the generation of noise (mainly a striking sound) at the initial state of the block 18 contacting the road surface.