Axle and wheel suspension parts are catalogued based on their location nearest the front or rear of the chassis. When a vehicle is cornering, stabilizer bar rubbers prevent the body from rolling. Bushings for the axle allow pivoting without binding. Meanwhile, control arms permit upward and downward movement of the wheels but prohibit forward and backward motion.
Part failure in this category is often related to prevailing weather conditions, vehicle age, driving behavior and the quality of road surfaces. Over time, the rubber itself begins to wear. Tears in the rubber may be observed, and gradual deterioration will lead to the decline of performance. Signs of failure include reports from drivers about impact noise, rattling, or shuddering and shaking when turning the wheel.