A door assembly for a vehicle includes an outer panel. A support panel is operatively connected to the outer panel and configured such that the support panel provides bending resistance to the outer panel when the outer panel is deflected toward the support panel during a first deflection distance of the outer panel. A cable is operatively connected in the door assembly between a first end and a second end of the outer panel such that the cable provides additional bending resistance to the outer panel when the outer panel is deflected toward the support panel during a second deflection distance of the outer panel, greater than the first deflection distance.