Upper strut mounts tilted forward of the lower ball joints on a MacPherson strut vehicle indicate which caster condition?

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Multiple Choice

Upper strut mounts tilted forward of the lower ball joints on a MacPherson strut vehicle indicate which caster condition?

Caster angle is the tilt of the steering axis when viewed from the side. On a MacPherson strut, that axis runs through the upper strut mount and the lower ball joint. If the upper strut mount sits forward of the lower ball joint, the steering axis tilts toward the front at the top, which is negative caster. Negative caster reduces the self-centering torque and straight-line stability, so the steering may feel lighter and prone to wandering. Positive caster would have the top of the steering axis behind the lower joint, while neutral caster is a more vertical/level alignment. Therefore, the described condition indicates negative caster.

Caster angle is the tilt of the steering axis when viewed from the side. On a MacPherson strut, that axis runs through the upper strut mount and the lower ball joint. If the upper strut mount sits forward of the lower ball joint, the steering axis tilts toward the front at the top, which is negative caster. Negative caster reduces the self-centering torque and straight-line stability, so the steering may feel lighter and prone to wandering. Positive caster would have the top of the steering axis behind the lower joint, while neutral caster is a more vertical/level alignment. Therefore, the described condition indicates negative caster.

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