I see Eibach makes springs for the IPL. Will they fit my 2010 s coupe, and are they better than the ordinary Eibach coupe springs?

 

They are probably really similar, but they don't make the model anymore so you're going to have a hard time finding it. I would know, since so many places listed it for sale but then emailed me saying they can't get it anymore.

 

The springs will fit but you'll wear your shocks out faster and have a bumpy ride if you don't pair them up with firmer shocks.