I have an 07 C4 without PASM, I like to lower the car about an inch as I think it sits too high. I don't want to drop more since I drive it regularly year round in crappy Boston streets, thru school/speed bumps when I drop my daughter off, etc. I don't want to compromise the practicality too much.

I was all set on getting Eibach springs as that seems to work well for many and is what I'm looking for, keeping ride similar to OEM. But, there are those who say the shocks will wear out much sooner. I have 48k miles now, can I expect them to last another 30-40k on the springs? If so I think I'll be happy with springs, but now I'm thinking what if I need to replace them much sooner?

So now I'm looking at the H&R street coilovers. I can't find much info on them for the 997, they are not a popular options like the PSS9/10. I know they are not adjustable and not really comparable to Bilstein/KW, but that's ok for what I'm looking for. Does anyone experience with these? Is the ride much stiffer/firmer than OEM? Will they last as much as oem shocks?

So that's my dilemma. Pay more upfront for the H&R coilovers and be all set with suspension for a while, but I don't really know what to expect ride wise. Or get springs now knowing the ride will be about OEM but shocks will need to be replaced (can be soon but maybe not).

Any comments/experience/advice will be much appreciated!

Eduardo

 

I went with the Eibachs a year ago and could not be more pleased.

 

Good to hear, I may just stick with springs. There's too much of an unknown with the H&R coilovers, can't seem to find anyone that has them on a 997.

 

Just happened upon your thread, I would suggest that at 50k, your shocks are almost done. Add springs and they won't last long and then you'll really be bouncing around. Add Bilsteins and lower the car only 1/2 inch. You'll enjoy the modestly firmer handling and ride, although they are quite comfortable. Skimp on the shocks and youll end up doing the job twice, including alignment.

 

eibach. for sure.. they offer better handling characteristics than the h&r

 

I got the H&R and it dropped the car lower than I wanted. Living in NY, I ended up going back to stock springs after a few months because I was just scraping everything no matter what angle I would take. I'm going with bilstein coilovers in the future

 

Did you have H&R springs or the coilovers? That's also a concern, I don't want to scrape all the time.

 

Definitely something to think about. I still think for purely street driving PSS10 sound like overkill and it's also more than what I had budgeted. I can probably do $2K plus install, which doesn't get me there.

Will shocks really be needing replacement around 50K? Is this normal? I guess I need to really reconsider getting just the springs at this point.

I just wish there was more info on the H&R coilovers that are within my budget, over 100 views and nothing, not even vendors that may carry them.

 

Lot's of vendors cary them. Ecs, awe, and so on. The H&R's are awesome coilovers. They will be only slightly firmer than your stock non-PASM suspension (which you will get with the lowering springs anyways) on top of which you will be able to tailor the perfect ride height for your liking. I've personally had 8 different sets of coilovers 4 of which were H&R's and they were the best of the bunch. H&R is a top tier brand and their product is top notch. Buy with confidence.

Mark

 

This is an interesting topic. Those of you who have installed H&R or Eibachs, did you have to change your suspension geometry and get new connecting-rods/tie-rods? (My Indi told me that if I wanted to lower my PASM equipped "S", I would need new suspension geometry components.

 

Note that H&R coils are not PASM compatible. You would need to have the warning overridden and you lose the "normal"/Sport adjustment. That's why everyone goes with Bilstein.
You should not need drop links for springs. Many have installed without them. You max out the settings though to maintain stock camber.

 

I have a PASM equipped 997.1S

For lowering springs (1-1.2'), nothing needs to be changed other than the springs and having the car re-aligned.

If you want to go lower than what the lowering springs offer (by going with a coilover) you will most probably NEED adjustable rear toe-links. All the aftermarket suspension component sold for our cars are optional and are definitely not required for lowering the car.

Mark

 

I only needed a new alignment with the Eibachs.

 

I only got the springs. If you're interested in them I have it sitting in my garage with <1k miles. Could negotiate a good price if you're interested in them.

 

H&r springs are PASM compatible. You don't have to have adjustable suspension. Rear arms(dog bones) in my case but they will get you back to stock alignment spec and improve handling through a more rigid chassis. I chose these to get my rear camber back completly