A method of building an unequal bead diameter tire with conventional components and contour lengths which are substantially equal, the contour lengths being measured along the neutral axis of the carcass plies between the beads and a plane containing the mid-circumferential centerline of the tread. The tire is molded in a special configuration not usually employed in shaping a tire, i.e. the tread is unsymmetrical in relation to a plane which normally bisects the tread, and the lateral edges of the tread are radially offset and not equally spaced from the center axis of the mold which is normally the case when the conventional methods are used for molding and vulcanizing a tire.