Car Suspension

CAMBER
Probably is the most familiar term of the 3.
Camber is the angle of the wheels,relative to the road, looking at the car from the front (or rear).

Try to imagine a vertical line through the middle of the wheel
0 degrees camber is when this imaginary line is in square with the road. (black)
Positive camber occurs when the "middle-lines" are in "V-shape" (red line)
Negative camber occurs when the "middle-lines"are in "A-shape" (green line)




CASTER
Looking to the car from the side;
Imagine/draw an axis-line through the steering-turning-axis of the wheel.
Most of the times through the upper and lower ball-joints or through the
cent-reline of the McPherson-strut.

Positive caster occurs when the top of this axis-line tilts towards the rear of the
car. (green line), Negative caster is the opposite (red line)
Positive caster provides the self centring-force which makes the car go straight without holding the steering wheel.
















TOE-IN & TOE-OUT
Looking to the car from the top (or bottom) ;
Imagine lines through the middle of the wheels in riding direction.
TOE-IN occurs when these lines are in "A-shape", lines cross in front of the wheels. (red lines)
TOE-OUT occurs when these lines are in "V-shape"; lines cross behind wheels. (green lines)



Spooring and Balancing Sheet.

For detail info, please check this site
http://www.rs25.com/forums/f9/t64709-comprehensive-diy-suspension-tuning-guide.html