To improve rim assembling workability without deteriorating air sealing performance and rim deviation resistance by arranging a lot of notches extending in the tire circumferential direction in a beat heel part.

A lot of sawtooth-like notches 4 are arranged into a multiple stages in a bead heel part 2h across the tire whole circumference in the tire circumferential direction. The notches 4 inclinedly cross in the tangential direction on the surface of the bead heel part 2h and inclined in the side wall 6 side in relation to the slope line. Providing of the notches 4 reduces the rigidity of the bead heel 2h and the bead part 2 fallen in a well part 3w in rim assembling is pushed up to a rim sheet 3s by pneumatic pressure so as to prevent the bead parts from being caught in climbing over a hump 3p and slid therein. The interval between the notches is preferable to be set to 0.5-2.0mm and the depth, to 0.1-0.5mm.