PURPOSE: To improve wheel uniformity so as to suppress RFV effectively, and improve the durability of a bead part at the same time.

CONSTITUTION: The bead part of a tire 1 is provided with the curved flange 8 of a rim 3, and a swollen heel 9 to be brought into close contact with the whole periphery of the corner round recessed part 7 of the rim 3 prior to the contact of the curved flange 8 with the opposed outer surface of the bead part. The rubber hardness of the swollen heel 9 is to be 65 or harder in JIS hardness, and the radius of curvature R1 in the tire width direction cross section of the swollen heel 9 is to be 6.5mm or less. An annular cavity 10 is further provided at the side wall side adjacent part of the swollen heel 9, and the radius of curvature R2 in the tire width direction cross section of the annular cavity 10 is to be 0.8 to 2.0 times the radius of curvature R1 of the swollen heel 9.