1 Series E81 130i (N52K) 3-door
Caster
Is the inclination of the kingpin in the direction of travel viewed
from the side. The line through the center point of the spring strut
support bearing and the control arm ball joint corresponds to the
"kingpin".
Thanks to caster, wheels are pulled and not pushed. In a similar
manner to king pin inclination, when driving in curves or around
corners, returning forces are reproduced to help return wheels to
straight-ahead position.
Geometrical axis 1
Is the angle bisector from the total rear-wheel toe.
Front-wheel measurements are taken in reference to this axis.
Symmetrical axis 2
Center line running through front and rear axles.
Wheel offset
Angle by which one front wheel is displaced more towards front or
rear than the other front wheel. The wheel offset angle is positive
when the right wheel is displaced towards the front and negative
when it is displaced towards the rear.
Kingpin offset/scrub radius
Is the distance from the center of the wheel contact face to the
intersection point of the kingpin extension. The line through the
center point of the spring strut support bearing and the control arm
ball joint corresponds to the "kingpin".
The scrub radius is influenced by camber, kingpin angle and
wheel offset of the wheel rim.
RA General information and definitions
BMW AG - TIS
22.01.2013 05:04
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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