The motions on the different angles caused by the road and the vehicle acceleration generates a vibration between axle and chassis.
The A-arm forms part of the steering and suspension system where these vibrations are dampened. It serves to absorb longitudinal and lateral forces and, in combination with the torque rods, is responsible for axle guidance.
P2's A-arms are weight-reduced, maintenance-free, and robust. Higher payloads are possible as a result.