Caster Offset

Caster offset is the distance between the centerline of the wheel contact point and the intersection point of the extended pivot axis. This greater the offset, the more effort required to turn a moving wheel. The negative effects of more increased offset are counter-acted by the BMW double pivot suspension system and the Servotronic steering system (if equipped).

Fig 1: Identifying Caster Offset Is Distance Between Centerline Of Wheel Contact Point

Courtesy of BMW OF NORTH AMERICA, INC.