What role do wheel spacers play in a suspension setup?

Wheel spacers serve an important function in a suspension setup by increasing the track width of the vehicle. A wider track can enhance the vehicle's stability, especially during cornering, as it lowers the center of gravity and allows for better distribution of weight across the tires. This results in improved handling characteristics and can help reduce the likelihood of body roll. Additionally, from an aesthetic standpoint, wheel spacers can give a vehicle a more aggressive stance by pushing the wheels further out towards the fenders, often creating a visually appealing look.

The other roles mentioned, such as weight reduction or enhancing fuel efficiency, are not typical functions of wheel spacers. While adjusting suspension stiffness is a critical aspect of vehicle dynamics, achieving that involves different components, such as shocks, springs, or strut adjustments, rather than simply adding spacers. Thus, the primary and notable purpose of wheel spacers lies in their ability to increase the track width, improving both vehicle performance and appearance.