I am having PSS9's installed next week at 3R Racing in Denver. Since I have to drive 500 miles to get there and could hit rain or even snow, I would prefer to keep my street wheels and tires(18" HRE with PS2 stock sizes) on for suspension alignment and corner balance as opposed to track wheels (18" Champion Monolite RG5 with PSC's in 235/40 and 315/30). I have the following questions:
1. Is this a mistake; do I need to take my track wheels down?
2. I was thinking of aligning to ROW specs and height per the manual. I did not want to lower any more than this to avoid problems KPV has so well explained to us? Are the ROW specs okay? ROW height okay?
Toe Front +5'+/- 5'
Camber Front -30' +/- 15'

Toe Rear +10' +/- 5'
Camber Rear -1degree 25' +/- 15'

Any other thoughts?
Rob

 

Some stuff to keep in mind. To get really technical about it, the ROW specs are specific to the tire heights and even pressures. If you use different height tires and set the ride height of the chassis to the ROW specs then your roll centers will be different than the ROW. In the real world when you have a multifunctional street/race car you’re always going to have to compromise something. The bottom line is, it won’t be the end of the world to do it on your street tires but make sure you have pressures where you’ll run them hot … make sure you or your weight is in the car when you corner balance and you should be fine. As far as the amount of camber that’s going to be determined by your tire wear. Again, it’s all a compromise otherwise you’d take 800 lbs out of the car, set the camber at about 3.5 neg and have springs so stiff it will rattle the rest of the parts you left on the car off… that’s my .02 …

 

Thanks Cary. I was hoping to get a response from you. Rob