The invention provides a wire wheel seat which is able to reduction weight-bearing sense and lessen situations of losing weight balance by carrying out simple variations to a holding mechanism for holding a wire wheel support of a movable cover. A guide portion (10d) from an inlet side to an inner side is formed at a sidewall surface in an internal space and an inclination maintaining face portion (10a) is formed at deeper inner side of the guide portion (10d). The spacing between opposite sidewall surfaces are enabled to be smaller as deeper to the inner side and such that the guide portion (10d) and the inclination maintaining face portion (10a) are respectively inclined and inclined angle of the inclination maintaining face portion (10a) is larger than that of the guide portion (10d).
