Roadrunner Region, PCA

Technical Information

The PCA Northeast Region has some really great stuff, technical and otherwise. To their Tech Tips click here!
(You will also find the following FAQ's at this site, but I thought they were so good, they deserved to be here, too!)

	Tips for Better Porsche Handling
There are three terms used to describe the overall handling characteristics of a car. Each relates to the balance of the car as you feel it from the driver's seat. Some of the characteristics show up at slower speeds and others appear at higher speeds.
*Understeer:* Often called "push" or "plow," the car feels like it is under-responsive to your steering inputs, and the wheels are not turned enough. The car will try to continue straight ahead. The initial response - and the wrong response - it to turn the wheels more.
*Oversteer:* The car wants to over respond to your steering inputs. The rear end of the car feels light, and the car acts as if it wants to spin to the inside of the corner.
*Neutral:* The car feels balanced and responsive; you feel comfortable and in control.
Once you have determined the car's basic attitude, this chart can help you improve your Porsche's handling balance. (This chart is just a guide; all of these factors interrelate, and change may, on rare occasion, produce the opposite effect.)

Suspension Component	Less Understeer More Oversteer	More Understeer Less Oversteer
Front spring rate	Lighter (small dia. torsion bars or spring wire dia.)	Heavier (larger dia. torsion bars or spring wire dia.)
Rear spring rate	Heavier (larger dia. torsion bars or spring wire dia.)	Lighter (small dia. torsion bars or spring wire dia.)
Front sway bar	Thinner or adjust to lengthen arm	Thicker or adjust to shorten arm
Rear sway bar	Thicker or adjust to shorten arm	Thinner or adjust to lengthen arm
Weight distribution	More rearward	More forward
Front shock setting	Softer	Harder
Rear shock setting	Harder	Softer
Front wheel camber	More negative	More positive
Rear wheel camber	More positive	More negative
Front tire width	Larger	Smaller
Rear tire width	Smaller	Larger
Front tire pressure	Higher	Lower
Rear tire pressure	Lower	Higher
Front track	Wider	Narrower
Rear track	Narrower	Wider
Front spoiler	Larger	Smaller
Rear Spoiler	Smaller, or less angle	Larger, or more angle

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