In one embodiment of the present invention, a steering mechanism for a children's toy vehicle comprises a non-circular wheel piece connectable to a wheel turning mechanism of a toy vehicle. An arcuate front portion extends along the front periphery of the wheel piece. Preferably, the steering mechanism further comprises a curved rear portion along the rear periphery of the wheel piece. In one preferred embodiment of the present invention, the steering mechanism includes a rear portion which is nested between two end portions of the front portion and the front portion and the rear portion form a tulip shape. In a further preferred embodiment of the present invention, the steering mechanism and wheel piece is combined with a front wheel frame which is connected to the wheel piece, a front tricycle wheel mounted to the front wheel frame, and a rear wheel frame which is pivotably coupled the front wheel frame. Two rear tricycle wheels are mounted to the rear wheel frame. The wheel piece of the steering mechanism is connected to the front wheel frame at a point eccentric to the wheel piece, and optionally is connected to the front wheel frame at a point offset forward from the center of the wheel piece.