With a PHB there are at least two major asymmetric effects.

The geometric roll center height rises when turning one way and drops when you turn the other way. The first is a "loosening" effect, the second tightens. Differences in the roll angles for L vs R turns may or may not be noticeable.

Rear axle roll steer varies as well, increasing when turning one way, lessening when you turn the other way. Most times, this effect acts in opposition to the geo-RC vertical migration effect.


That's generally what happens. The overall effect depends on the details (and the devil inside).


It is possible to use PHB asymmetries to offset the asymmetric effect of driveshaft torque trying to load the LR and unload the RR. I think the intent here is to balance the handling behavior and "feel" when adding throttle on corner exit. Consistent behavior = predictable = fast.


Norm