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Dealer is installing the H&R springs (stock shocks, etc)... so I want to have them do alignment as part of this.
ANy specific recommendation as to what alignment specs I should be asking for ?
Its 08 Cayman S, 19" sport design, NO PASM. Will be used for daily driving on mostly smooth rural roads and some light canyon runs and as my LEARNING car for DE / track days....
SUGGESTIONS?
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
Hi Dirty,
You'll find that the rears will be at the upper range in camber (1.8 instead if 1.) because you just plain run out of adgustment without changing out the toe rod for a gt3 turnbuckle. If you are looking for a good slightly aggresive street alignment this is where I set my car and I plan on playing with air pressure on the rears to change the tire wear. An aligment should cost around $140, dealer here quoted $260-yikes! Enjoy your new car because i think these springs make the car what it should have been, it is much more comfortable.
front-
toe .07
camber .4
caster- not adjustable
rear-
toe .10
camber 1.8
Thats what I did and the car feels awesome. Good luck.
Dirty: With lowering springs, you should be able to easily get over -1 degree (maybe -1.5) camber in front. That should help handling in the twisties and on track. I'd have -1.5 in front if I could get it, but can only get -1.0 in stock configuration. I do have -1.8 in the rear, however.
i just had 20" wheels installed on my car, and i think i now need to do an alignment, too. But how do you know when an alignment is needed? what are the symptoms?
i'm just a bit concerned because now the car has a slight right bias in the steering that i didn't notice before.
Can you tell us how much are you paying for labor?
it was all part of the purchase negotiation, but basically was $1200 + total (parts and labor)... so a little on the high side of course (since its a dealer), but for me, probably the right way to go (otherwise would have NEVER got it done)
they did not promise an alignment also, but going to talk to them to see if I can gt them to throw it in... they are being pretty cool, because hell, i know they just made a nice chunk of change off me.
its like tipping the bartender real good... at the end of the night, you spent more than you needed to, but you probably got better / faster service than the other guy, a friendlier vibe, a little more juice and probably a comp here or there.
guys, thanks for all the input.. i wish I understood more about this and how the setting affect things... intersesting the different ideas. I feel so ignorant for not really understanding
Wouldn't negative camber reduce tire traction and cause uneven wear? I am thinking of zero camber for rear and front. Is that a good idea?
Yes and no...
What happenss is that when the car goes around a corner, the weight of the vehicle shift over to one side and the car rolls and the suspension leans over. By having negative camber the tire will roll ON TO it's meaty section thus allowing more traction when cornering. I'm sure you have seen a set of tires on a car that had the outer sidewall all worn out...that's because the tire is rolling over itself; negative camber will correct that. On the Cayman, the front tires have a tendency of doing that with the factory settings....with H&R's you can get about -1 degree which starts to be good.
If all that you do is long long highway trips then yes, the alignment I suggested would wear the inside of the tires faster than the outsides but since the OP said he wanted to do some DE's, this is a good compromise of handling and longevity.
having 0 degrees of toe in front will allow for very sharp turn in and steering response at the expense of some straight line stability (like on the highway when there are ruts it will want to follow them more). The factory setting has toe in at the front. Some race cars have some toe OUT for even greater turn in.
Toe IN at the rear is very important on the Cayman and 911's if you don't want to spin....the geometry of the suspension in the rear makes the rear wheels toe OUT slightly when cornering hard. Think about that for a sec...if you had zero toe in the rear then were cornering hard, the rear wheels would be pointing OUT of the car like a 4 wheels steering car! needless to say if you lift, you're will spin!
On my car I have about -2.5 degrees camber in front, zero toe, 8.0 caster
in the rear I have -2.05 degrees camber, 1/8" total toe in and ruin my car a little bit on the street and to and from the track and I'll never wear out a set of tires on the street. In fact, I run Toyo RA1's on two sets of wheels (steet and track) just that one set is shaved and the other is full trad depth.
Hope this helps.
Chris
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'06 Cayman S -JIC Cross, Quaife, CCW C14 wheels,RA1's, Milltek cat back, GT3 seats Schroth harnesses, TC design bar, Pagid yellows, GT3 cup brake ducts,de-snorked, vanilla air freshener
Until 
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