Corban_White
Well-Known Member
- Location
- Payson, AZ
The angle you're talking about is still just the caster angle whether you're measuring it above or below the centerline, and doesn't change with tire size - I think what "trail" (might have a different name when talking 4-wheel vehicles?) refers to is the distance between the 2 lines (at ground level). That certainly does change with tire size, and I'd assume it does indeed have an effect on handling.That's where I've been mistaken. I understood all of that: I just incorrectly labeled KPI as the angle created between your the imaginary castor line drawn up continuous from upper and lower bj and up from contact patch center point to that imaginary intersection point. I can't for the life of me think what to call that angle. (I guess I would label it imaginary effective steering thrust angle or trail).
And this angle changes based upon backspacing and tire diameter...
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