No, it’s always best to wash wired bras by hand. Washing your underwired bras by hand retains the elasticity of the fabrics and the shape and structure of the underwires themselves. Machine washing your bras can damage your bras. You should also always lie your underwired bras flat to dry or hang them. The heat of the dryer can cause the fabrics on your bra to wear out faster and can compromise the shape of the wires, too.