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Running street compound tires and a good setup you should be fine without GT3 control arms. As you move towards softer compound tires, they generate a lot more lateral grip and require more negative camber. I like to make tire and setup choices once per year and run the same comp tire all season.
A rough guide for track days:
140 TW -1.5deg F camber
100 TW -2.0 deg F camber
40 TW -3 deg F camber
Racing slicks -3-4deg F camber
This is variable depending on specific tire choice and driving style but gets you in the ballpark. Final adjustments should be made after checking tire temps and wear patterns. Getting your setup just right means tires achieve max grip, wear evenly, and last a lot longer. Setup costs pale in comparison to shredding soft compound tire shoulders and eating a set of tires in one weekend. A $1600 set of Hoosier R6 might last 4 track days. Shredding a $1600 set of R6 comp tires in one day due to a lousy setup is painful.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Last edited by Topless; 05-16-2013 at 11:07 AM.
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