Your Suspension bushings are your first line of defense in absorbing bumps from the road and reducing vibration from your suspension system to provide a more comfortable ride on the streets. If you currently own a 20+ year old car and have never replaced these on your ride, the difference could be night and day. Or if you are a true track rat, switch to spherical so you, the driver, can absorb all the bumps and noise while giving your suspension system maximum ability to stay dialed in.