i have eibach lowering springs in now, if i do say, pss 9/10's, do i need to go back to stock springs or do they come with springs or are the springs eliminated all together...? don't really know as i haven't done this one , yet... thanks ahead, kevin

 

Which are you more interested in; looks than outright performance?

Coilovers are complete units and come with a spring package, and dampers. You mat need to reuse your stock shock mounts. But the rest will come with the kit. Dampers are everything. Get the best quality dampers you can. Every coilover kit will come with different spring rates also. You don't need to be an engineer to figure it all out. Every mfr. Will match spring rates to dampers to get their particular ideal goal. Every mfr will also have a different opinion.

Read up on Coilovers, and ask opinions from folks with experience in the same use-case as to how you plan to use yours. Some of us have tons of experience and can help.

 

a coilover is a shock absorber and spring unit. they come together and will replace your current eibach spring and shock.

 

I installed Damptronics on my car 4 years ago. They are amazing. The advantage is that you can adjust the amount of lowering whereas lowering springs are a fixed amount (and for me, too much). I installed them myself, then had the car corner balanced and aligned with a more aggressive alignment, which improved the handling considerably.

 

i thought that might be the case, and with that setup, the wider spring and spring base, especially on the front, prohibits my putting wider tires on the front. with these shock/spring units i will have more room in there...but i am kind of assuming here...best not to do that, can you tell me if i am correct here?

and thanks for the info gentlemen/ladies...

 

If you're planning tires wide enough to conflict with springs, your tires are far too wide.

 

usually 99.9% of the time, the coilovers are the same size as your stock units. what size tire do you want to use? clearance has more to do with your wheel offsets and widths than tire size.

 

Bilstein Damptronic front springs and perches are much narrower than the factory springs.

 

so...here's the deal with the wider tires thing...i bought a set of 991 20" rims, beautiful, don't remember the name...anyway, they came with a set of new pirellis, the 245/35 and 295/30's...i put them on the car and the rears fit fine with an ET70, i added 7mm spacers, perfect... the fronts however with an ET55 touch the base of the stock spring setup just enough to keep the wheel from rolling, now as i set here writing this, i can't remember whether i put the spacers on the front as well , i must have, cause if i didn't, all i would need would be those spacers to free it up...i must have ...anyway, i went and got 2 235/30 pirellis, mounted 'em and voila! all is well. however, when i put them on and torqued and stepped back and looked at the car, i realised i can't roll with these, they're too big, just don't look right, so i took 'em off and put them up for sale on ebay kleinanzeige, where they have been for sale for almost a year and its about time for a set of tires on my 19's and i thought i would put these on for the summer since they haven't sold, AND they are much less offensive with the larger tires on the front instead of the235/30 rubber bands...which i could run if i have coil overs , which i have been thinking of doing anyway, the lesser of evils...