PROBLEM TO BE SOLVED: To provide a tire filler which can be easily mounted and also can be stored and transported.SOLUTION: A tire filler 1 is accommodated in an annular space portion 7 which is formed by an annular rim 4 and an annular tire shell 5 mounted onto the rim 4. The tire filler 1 is formed into a rod-like shape having a cross section of a substantially circular form from a foam thermoplastic elastomer, and has an engaging part 11 formed on one end surface thereof and an engaged part 12 formed on the other end surface thereof. Plural tire fillers 1 are combined with one another in a lengthwise direction in such a manner that the engaging part 11 is engaged with the engaged part 12 of an adjacent tire filler 1, and are located in annular form so as to substantially fill the annular space portion 7.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT