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Home >> BMW >> 2013 >> 135is 2D Convertible, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1930 (Steering And Wheel Alignment - Repair) >> General And Safety Information >> 32 00... General information and definitions >> Castor

32 00... General information and definitions: Castor

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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.

Fig 1: Identifying Caster
G06889630Courtesy of BMW OF NORTH AMERICA, INC.