On Sun, 16 Jul 2017 12:13:01 -0700 (PDT),
wrote:

cl...@snyder:

Camber in/of itself is not a centering
parameter. Caster and kingpin(SAI)
are.
Anyone who knows anything about alignment knows that - but the
combination has to be right to get the combination of good self
centering and easy steering - particularly when running high negative
camber.That's where you need a REAL alignment man. Getting it to go
down the road straight IS, most definitely, a camber issue. Camber
will cause a pull a lot quicker than caster. Because of the
relationship between KPI and camber, the spec required may change
significantly if a rim with different offset is used, or even a
different rolling diameter - because it changes the "scrub radius" The
"scrub radius" has to do with the relationsgip if the wheel centerline
and the steering axis (or baljoint or kingpin) centerline and where
they meet. A vehicle with a positive scrub radius will pull to the
side of a blown tire very violently, while a negative scrub radius
will not. With a positive scrub radius a low tire is much more
noticeable, and a cross camber situation also causes more pull.
Putting smaller wheels on a car reduces negative scrub radius -
putting taller tires on increases negative scrub radius

I go into all this to explain, in part, why I chose a high end of the
negative camber lmit on the Vauxhall when I installed the oversized
(much wider and higher offset rim which tends to change the scrub
radius) Negative scrub radius counteracts brake pull and tends to make
a front end try to toe in, while negative camber tends to cause toe
out. Getting it ballanced keeps the "active tor" or "rolling toe"
neutral.