Redhot2474

What are these compensating rings people speak of when lowering ? I'm thinking of ordering eibach or techart for 997.2 c4s, will i need them? Do these rings get rid of Car looking high on one side? Thx

EMC2

They come in 3mm and 6.5mm depending on vehicle model/setup:

ATSR

This topic puzzles me a bit. I've seen a few lowered cars that seem to have more rake than others and in this case the plates are needed to raise the front.

I was lucky that my car ended up perfectly fine after lowering without having to add anything else. I don't know why it happens in some cars and it doesn't on others.

OKB

its like a bump stop. it is determined if you have long usa springs you have the long bump stop , so if you go to shorter row spring you also have to change to the corresponding bump stop length

Redhot2474

Thanks for your input, are these on a as needed basis? When I drop car off should I buy these too in case they are needed? Not many people mention they use these at all...mines a 2009 c4s with pasm if that makes any difference - want to throw on pair of eibach springs

EMC2

See my post here - hope it helps:

https://rennlist.com/forums/997-foru...l#post13968636

In summary I would put them on from the beginning. If by small chance, you don't like the height, you can easily remove them by just jacking up the car with the springs compressed (using 3 or 4 high strength cable ties), and cutting the compensating plates off.
Fitting the compensating plates afterwards if you need to means pulling the entire shock assembly out again (i.e.. BIG effort)

Redhot2474

Ok, sorry for these probably moronic questions - so , do I need to add compensation plates ? Or just not remove ones that are currently on the car? Thank u!

EMC2

no worries. Way better to ask than not.

You can keep the same compensating plates that are currently on the car or switch them out with new ones (same size). Most of those parts are really cheap so I just replaced everything whilst at it.

If you decide not to replace everything, then items you should definitely replace are shock mounts, bearing plates and all nuts while you're in there.

Redhot2474

Thx so much

850tgul

Adding some real world results if anyone else goes for the same setup as me. Just installed Bilstein B12 kit (Eibach springs & B8 dampers) on my 997.2 base non-pasm car. To my surprise, my car came with the thinner 3mm, so I re-used them. After 24 hours and a 20 minute drive to settle everything, the front is a little lower than the rear. So, if you want wanted a more even result for this setup, you would want to use the 6.5mm compensating plate in front. The thing is, I actually think the front height is perfect and wish the rear would come down a bit but, all in all, way better than the 4x4 look of the base non-pasm ride height.