Why should unsprung mass be as low as possible?

Unsprung mass should be kept as low as possible because it directly impacts a vehicle's ride quality, handling, and overall performance. Lower unsprung mass allows the suspension system to respond more quickly to road irregularities, improving traction and stability. This results in better tire contact with the road surface, enhancing grip and reducing wear. Additionally, a reduction in unsprung mass can lead to improved fuel efficiency and reduced stress on suspension components.