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Discussion Starter #1 (Edited)
I want to start this thread to help each other figure out ways to deal with the nuances of all the suspension set ups that are available out there.

what many new owners & first timers (like myself) didn't realize when throwing on a coilover setup where the things we would have to compromise on when you're installing anything that says track, off road, not for street use, etc

these warnings are not there for legal purposes only, they're there to let you know the item was not designed and engineered to deliver the same comfort, ambiance, or ergonomics that a factory system delivers. you may be able to deal with a little stiffer ride, but the rattles, squeaks, and creaks will drive you insane and that's probably why you sometimes see coilover systems up for sale with less than 1000 miles.

this thread will include coilover specific items, but I would also like to extend it to any chassis-suspension item (bushings, linkages, swaybars, etc)


HOW TO CONTRIBUTE:

-I've reserved the posts bellow so that members don't have to dig through too much info
-the coilover setups are in alphabetical order & NOT order of quality/performance etc
-if I'm missing something let me know I'll figure out a way to add it
-we are not here to directly promote any one company, if you have an issue with a part/setup that will prevent members from unpleasant experience by all means share it
-please add your contributions to ANY set up and I will include it in the main pages and reference you so that anyone who has a question may ask you directly or ask openly for members to help out.

NOTES:

-the photos I use are meant to show the exact product being discussed, they may have watermarks
-at the moment this thread will be empty until i can research individual suspension set ups (so you're strongly encourage to contribute)
-i've posted specifically for the Bilstein PSS9 setup since that's what I have and that's where i'll be able to provide the best advice
 

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Discussion Starter #3 (Edited)
Bilstein PSS & PSS9

Spring Rate front:
Spring Rate rear:





Location:
New York & Long Island

Road Type:
City 5 Boroughs
Highway Tri-state area

Mileage per year:
10,000 miles +/-


Issue:
-after a while the front springs will develop a clunk at low speeds (< 20mph)
(this is a common issue with basically any coil over setup)

related material in regard to my PSS9 Set up:
http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/305353-bilstein-pss9-suspension-clunk-noise.html

Fixes:
-i've notice that how you orient/rotate the spring will affect how loud the clunking is (this includes the orientation between the helper and the main spring)
-use power washer to remove road grime, the more grime you have the louder the clunking
-DO NOT use any type of grease (you will only build up grime in the helper spring)

PRE-Installation Advice:
-purchase needle bearing (aka thrust bearing)
-install rubber spring coil sleeves
helpful references
http://www.swiftsprings.net/products/universal/misc.html
http://www.summitracing.com/parts/HAL-7888-109/?rtype=10
http://www.timken.com/en-us/products/bearings/productlist/roller/thrust/Pages/default.aspx
http://www.hypercoils.com/spring-perches.html#.U5OpOuIYSQY
http://www.amazon.com/Torrington-TRA-4052-Needle-Thrust-Bearing/dp/B000MNA9S8/ref=pd_bxgy_indust_text_b?tag=citofgamonlco-20
http://www.amazon.com/Torrington-NTA-4052-Needle-Bearing-Assembly/dp/B000MNC6BG/ref=sr_1_2?ie=UTF8&s=industrial&qid=1243972688&sr=1-2?tag=citofgamonlco-20
http://www.bilstein.de/fileadmin/user_upload/pdfs/bilstein_katalog_2012_2013_gb_low.pdf
 

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I had a very good experience with Ceika! The owner was great to work with and there is great customize-ability, especially for the price point.

Spring Rate Front: 8K
Spring Rate Rear: 6K
Valved for: Fast road/lowering
Helper springs

Location: Los Angeles

Mileage per year: 5K

Issues:
Ride is quite firm. I've driven a car with ground control coilovers and these are much firmer, but I am also running 19's and my set up is quite low, and LA roads are not great. Ride is phenomenal on good roads. Great steering feedback.

Pros:
Value. Good quality. Corners very flat, and turn in is noticeably better with a complimentary alignment.

Installation:
These are plug and play. I didn't need anything other than the coilovers themselves.

http://ceikaperformance.com/Custom-Built-Coilovers-c10/
 

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Ground control Coil overs custom valved w/ uprated springs

front rate: 6" spring @550#
rear rate 10"spring @425#

Location:
South Bay California

Road Type:
Track
LA surface streets and highway

Mileage per year:
less then 2500

Issue:
I had the bearings go out on the front camber plate, rear is a pita to adjust. Can not go very low.

related material in regard to my Ground control Set up:
the front will clear 275/35/18 on a 18x9.5 +20 with no spacer depending on tire.
I am currently ruining hankook rs3 285/35/18 on all four corners. The front needed a 15mm spacer and some filing of the perch body.

Pros:You can have the shocks sent in to Koni NA to have them valved and shock dynoed for a decent price and quick turnaround.
it is also one of the only kits that comes with a adjustable camber plate.

Fixes:
get some thrust washers/needle bearings for the rear.
 

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No h&r love.:sad1:

I have a set of h&r rss clubsports. I love them but can only find limited information :/
 

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Ground control Coil overs custom valved w/ uprated springs

front rate: 6" spring @550#
rear rate 10"spring @425#

Location:
South Bay California

Road Type:
Track
LA surface streets and highway

Mileage per year:
less then 2500

Issue:
I had the bearings go out on the front camber plate, rear is a pita to adjust. Can not go very low.

related material in regard to my Ground control Set up:
the front will clear 275/35/18 on a 18x9.5 +20 with no spacer depending on tire.
I am currently ruining hankook rs3 285/35/18 on all four corners. The front needed a 15mm spacer and some filing of the perch body.

Pros:You can have the shocks sent in to Koni NA to have them valved and shock dynoed for a decent price and quick turnaround.
it is also one of the only kits that comes with a adjustable camber plate.

Fixes:
get some thrust washers/needle bearings for the rear.
6" or 7" springs on the front? GC's track setup typically includes 7" springs in the front.

I had this setup for a number of years, it with 380 lb. 10" springs in front and loved it, but really wanted to go higher with the spring rate, and the Konis start to max out their capabilities around this level. So I am currently awaiting delivery of a three-way MCS setup like that pictured below and will post my experience once installed.

--Peter
 

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