According to the recent trend toward light-weight in the automobile industry, the weight of the outer tie-rod should be reduced. Tie rod is one of important steering components in electric or fuel-cell vehicles as well as conventional internal combustion engine vehicles. Therefore, it is required to develop optimal design and manufacturing process of tie rod for light-weight conditions in various vehicles. In this paper, finite element analysis (FEA) has been carried out to study buckling and fatigue characteristics of aluminum alloy outer tie-rod using the commercial software ABAQUS. In addition, the thickness and the cutting angle of the outer tie-rod neck were set as design parameters to comprehend buckling and fatigue characteristics. It was concluded that the change of thickness showed the direct linear tendency on durability while the altered cutting angle did not show any direct influence.