Suspension Configuration Information

Hi all,

I found this information after much searching for GT3 ride height settings.  In looking at them, I’m going to go with ROW Sport to start as the car needs to be streetable and I’d like to save some of the life on the rear tires… it will be a starting point anyways.

As taken from:  http://www.lfsforum.net/showthread.php?t=4060
—————–

RoW Sport:

Front ride height: 138mm

Rear ride height: 148mm

(I don’t know how to convert the spring rates (front 170lbs/in rear 260lbs/in)to kN/m…

…so I guessed them)

Front spring rate: 60kN/m

Rear spring rate: 75kN/m

I don’t know the anti-rollbar stiffness but I know the ratio between front and rear – 0.436. (I calculated from it from the table 2) So, if the front stiffness is lets say 35kN/m the rear stiffness is 15.3kN/m.

You can calculate the damper values from the chart 9 and 10. I can’t…

Steering lock:

(911 GT2: ratio: 16.9:1, turns, lock-to-lock: 2.98)

So it’s nearly 32 degrees which is quite low actually…

LSD:

(Again from 911 GT2)

40% power, 60% coast

Camber:

Front -0.5 degrees

Rear -1.25 degrees

Toe-in:

Front ~0.1 degrees

Rear ~0.2 degrees

Tire pressure (for Boxter 17″ wheels):

Front 29psi ->2 bars

Rear 36psi->2.5bars

GT3:

Front ride height: 112mm

Rear ride height: 125mm

I don’t know the spring rates so I guessed:

Front 75kN/m

Rear 90kN/m

Both of them are very stiff but GT3 has very harsh ride I think..

Camber:

Front -1 degrees

Rear: -1.83 degrees

Tire pressure:

Front 32psi->2.2bars

Rear 39psi->2.7bars

Sources:

http://www.pca.org/panorama/sample_article_3.html

http://www.pca.org/tech/tech_qa_ques…-5762DAAB1EC6}

http://www.pca.org/tech/tech_qa_ques…-5BBD4A3E2B8B}

http://www.pca.org/tech/tech_qa_ques…-9BFB817DF141}

http://www.pca.org/tech/tech_qa_ques…-2351E45810E1}

http://www.automobilemag.com/reviews…rsche_911_gt2/

http://www.motorsportscenter.com/article_124.shtml

RoW Sport:

Front ride height: 138mm

Rear ride height: 148mm

(I don’t know how to convert the spring rates (front 170lbs/in rear 260lbs/in)to kN/m…

…so I guessed them)

Front spring rate: 60kN/m

Rear spring rate: 75kN/m

I don’t know the anti-rollbar stiffness but I know the ratio between front and rear – 0.436. (I calculated from it from the table 2) So, if the front stiffness is lets say 35kN/m the rear stiffness is 15.3kN/m.

You can calculate the damper values from the chart 9 and 10. I can’t…

Steering lock:

(911 GT2: ratio: 16.9:1, turns, lock-to-lock: 2.98)

So it’s nearly 32 degrees which is quite low actually…

LSD:

(Again from 911 GT2)

40% power, 60% coast

Camber:

Front -0.5 degrees

Rear -1.25 degrees

Toe-in:

Front ~0.1 degrees

Rear ~0.2 degrees

Tire pressure (for Boxter 17″ wheels):

Front 29psi ->2 bars

Rear 36psi->2.5bars

GT3:

Front ride height: 112mm

Rear ride height: 125mm

I don’t know the spring rates so I guessed:

Front 75kN/m

Rear 90kN/m

Both of them are very stiff but GT3 has very harsh ride I think..

Camber:

Front -1 degrees

Rear: -1.83 degrees

Tire pressure:

Front 32psi->2.2bars

Rear 39psi->2.7bars

Sources:

http://www.pca.org/panorama/sample_article_3.html

http://www.pca.org/tech/tech_qa_ques…-5762DAAB1EC6}

http://www.pca.org/tech/tech_qa_question.asp?id={769CCD21-3CD8-422B-851C-5BBD4A3E2B8B}

http://www.pca.org/tech/tech_qa_ques…-9BFB817DF141}

http://www.pca.org/tech/tech_qa_ques…-2351E45810E1}

http://www.automobilemag.com/reviews/used/coupes/0104_porsche_911_gt2/

http://www.motorsportscenter.com/article_124.shtml