What is the highest high setting the pss10 coilovers can be set to? If I read the specs correctly, with the highest setting, the car will be lowered a minimum of 30mm. Is that correct? This means the 996tt can only be lowered 1.25' and lower?

The reason I ask is I recently saw a 996tt lowered on H&R springs (about 1" lower from stock) and the car seemed very low, I was hoping if I go with pss10 coilovers, I would be able to set the height a little higher then the 1" H&R springs lowered the car.

 

The pss10s will lower the car to a correct look if that's what you're looking to achieve.

 

Look in the instructions which I copied below. Ride height setting is clearly spelled out there. There is not much leeway as far as ride height goes, 5mm in the front and 10mm in the rear.

The following is an excerpt from page 7 of the PSS10 mounting instructions published by Bilstein and available on their US website . The same information is also contained in the PSS10 TUV certificate:

The adjustment range of the spring plates is only approved within the range of the values given in the table below. Adjustments must be set so that the body is level when the vehicle is empty apart from the driver. The lowest approved adjustment and the permissible adjustment range are to be entered, stating the fixed axle reference points. (Example, see below).

Manufacturer PORSCHE
ABE-/ EG- BE- No. e13*98/14*0059*..
type designation 996 Turbo (4WD)
model 996 Turbo

FRONT according to permissible axle load and adjusting dimensions
spring part number
main spring E4-FD1-Y623A00
helper spring E4-FD1-Z349A00
shock absorber part number with damping force adjustment VM3-E716

permissible adjustment range
maximum permissible axle load 825 kg (1815 lb)
80 – 90 mm* = 10 mm range
* measurement:
top edge of spring seat down to the center of mounting screw

REAR according to permissible axle load and adjusting dimensions
spring part number main spring E4-FD1-Y518A00
helper spring E4-FD1-Y504A01
shock absorber part number with damping force adjustment BM5-D541

permissible adjustment range
maximum permissible axle load 1250 kg (2750 lb)
205 - 210 mm* = 5 mm range
* measurement:
top edge of spring seat down to the center of mounting screw

�� There are no technical objections against the use of all O.E. wheel/tire combinations.
�� The ground clearance in unladen state is reduced by the installation of special springs. It is the approximate equivalent of that of a partially laden stock vehicle. When the vehicle is loaded to the permissible axle loads the ground clearance does not change as compared to the stock vehicle. If spoilers, rear aprons and special exhaust systems are mounted, however, the reduced angle of slope must be noted (travelling on ramps etc.). �� The specified minimum height of the coupling ball above the road surface with the permissible total weight of the vehicle (acc. DIN 74058) is 350 mm.

 

I kind of have the opposite question, how low can I really go with PSS10's? What is needed to try to get as low as possible?

Additionally, does anyone else get a squeek out of their PSS10's?

Bought the car with these installed so bare with me.

 

Listen to Phound, he knows his stuff. If you adjust outside of the recommended height range you will be outside of the shocks sweet spot and possibly hitting the the internal bump stops. Trust me I've been down this root and found out for my self, the car will handle way worse outside of this range.

I have Euro spec PSS10's and noticed Phounds front measurements are slightly different, stick with the instructions that came with the kit.







This is my stance with the front and rear almost to the lowest height range with 996GT2 sized wheels, I have recently lowered the rear to lowest range.

 

The instructions I posted were from about 5 years ago. I think Bilstein raised the front and additional 5mm (from 80-90 to 85-95) due to the problems people were having with bottoming out the front shocks. As such, your kit has the setting.

 

Thanks guys

 

I was curious about the mounting plates. I know it is OK to go with the stock plates but is it recommended to upgrade, go with new stock plates, or even add a camber plate. Any consensus on this . I have a 996TT and about to install the same suspension.

 

I would recommend new stock perches. Adjustable camber plates will cause added NVH and you will not see the added benefit unless you track the car and use tires that require the more drastic alignment settings.

Should be able to dial in factory GT2 alignment specs with the stock spring perches.

 

This ^
I have Tarett f/r on my PSS10s and they are not something you'd want on a street only car. You can always rotate the stock mounts for added camber and keep the cush.