I'm planning on installing a set of Eibach Pro Kit lowering springs. My friend has a set he doesn't need anymore (used for a year or so). Would it be bad to use them or should i just buy a new set? Thanks in advance!

 

I think it would be better because then the springs would already be worn in.

 

Nothing wrong with it at all, Eibach makes quality springs with a lifetime warranty I do believe.

Just make sure you mark which spring goes where when you unistall from your friend's car.