Yea you have too look at both KPI and Caster for your total SAI, they're both related, but all the tire thus camber cares about is SAI. It does make a difference, and is a hell of a lot easier than adjusting frame points, just make sure trail isn't to much where you start breaking stuff or jacking too much weight off your inside rear! One thing a lot of people surprisingly forget when they do kinematic analysis is with the roll the car for roll conditions, they forget to turn the wheels :/ I've seen it done way too much!
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Bobby Alley
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