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Old 02-25-2015, 06:10 PM   #199
Thorpedo
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Join Date: Mar 2013
Drives: '13 Ultramarine FR-S (STX)
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Does anyone have any information in regards to the actual amount of roll we see? (yes, I know it is car specific dependent on modifications and conditions) I have a fender video from last year's autocross season that shows what looks like 3-4" of roll total if turning left to right. This was with 245-40 200TW tires and the strano front bar.

Now that I have my coilovers and I'm lowered it would presumably be much less, I'm guessing in the range of 2.5" based on watching others run my car around the track. This may be a HUGE oversimplification, but are we aiming to have the outside tire flat on the ground while cornering?

Edit: after doing some reading it seems the increased spring rate is probably offset by the by the leverage of the center of gravity over the roll center. I'll shut up until i have a deeper understanding.
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2013+14+15 Atlantic Region Motor Sports Autocross STX Champion
2013+14+15 Atlantic Region Motor Sports Overall Autocross Champion
2017 Bluenose Autosport Club Overall Rallycross Champion

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Last edited by Thorpedo; 02-25-2015 at 07:14 PM.
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