Alignment Specifications

[Tidybuoy]

My car is going in tomorrow for new tires and alignment.

I'm wondering if anyone has recommendations for the alignment specs. My current setup (per the prior owner) are as follows:
Performance Alignment - Zero Toe Front & Rear
Camber (approximately): Front 1 1/2 degrees, Rear 2 1/2 degrees
No Crown Adjustment (not sure what this means)

My issues: I like the way the car handles but I feel it is a bit twitchy at high speed. I'm thinking that this could be because of the zero toe. Currently, it feels like you point, it goes. This means full concentration at high speed. I'm wondering if a little toe would cause the steering to center a little better. Also, there is no mention of caster adjustment from the prior owner.

I'm a novice but the shop I'm going to is great and the I know the owner well. He's had many Porsches over the years and I will take his advice but I'd feel a little better if I at least understood better.

Lastly, the car is set to Euro height. The camber may be set to help the tires clear better but I'm not sure on that.

I'm open to suggestions.

[wildcat077]

For starters i would say that there is too much of a difference between the front and rear camber as the increment should be 1/2 a degree meaning if you have -1.5 front you should go with -2.0 rear and so on ...
Also our cars like 1/16 toe in on each side front and rear to compensate for the suspension movement and caster should be at max or at least even L/R at approx 6.0 if you can get it !

My car is set up with -2.0 front camber and -2.5 rear camber with 1/16 toe in left and right and 5.9 caster L&R front.
This works for me and my application,although everybody's car will be different !

Just a thought here,if you're not tracking your car then -2.5 neg rear camber may look cool but you'll wear out the inside chord of your rear tires pretty fast on the street ... -1.0 and -1.5 would be more appropriate for a street car !

Cheers !
Phil