Springs vs Coilovers

[senna]

what exactly do you mean by that? if the spring sits too low a nd overworks the shock isn't that essentially the spring causing the issue? Or the shocks for not keeping up with a non desirable spring?

Putting things simply, the spring holds the weight of the car and the shock or damper controls the way that weight moves around.

When you take a shock that has been working in a particular range for say 80,000k's it creates a wear pattern on the rod and the seal. So when you move that range higher or lower the contact point is different and the wear pattern starts all over again. This time though the seal will fail and let gas/oil out of the shock body.

A similar thing happens inside the shock where the piston moves up and down inside the tube.