Ride and handling are two important requirement of a vehicle evaluation for its comfort and directional control and vehicle stability respectively without any compromise on performance. The suspension system of the vehicle connects the unsprung mass to the sprung mass of the vehicle and acts as the structural medium of energy transfer of road input forces. The unsprung mass vibrates during complex tire/road interaction makes the normal forces to fluctuate at the contact patch and in turn influence the performance, handling and ride characteristics. This necessitates suspension design for vibration isolation, suspension travel and road-holding of entire vehicle system. During tire/road interaction, wide range of excitation frequency forces enters into the vehicle through tyre wheel assembly to the knuckle, and further through suspension links and lower control arm to the vehicle body and set the sprung mass (vehicle body) to vibrate which results in perception of vibration and noise by the occupants. The frequency content of the excited force is very important as they stimulate the natural behaviour of components such as tyre wheel assembly, suspension and Lower Control Arm (LCA). As it is understood from literature, that vehicle cabin vibration and noise are of low frequency phenomenon, this paper presents the prediction of natural behaviour of LCA with the application of numerical and experimental modal analysis procedure and further extended to optimize its material and geometry for its natural behaviour. The main objective of the study is to predict and shift the natural frequencies of the LCA beyond low frequency range by applying topography optimization technique. In the first step a finite element model of a lower control arm is prepared and its modal behaviour is predicted using OPTISTRUCT-HYPERMESH software. Secondly the experimental modal analysis is performed to validate simulation results. And in the third step, a parametric study is carried out to observe the influence of material and geometry over the natural behaviour of LCA. © Nova Science Publishers, Inc.