Spoil steering response

H-shaped torsion beam rear axle in NCP10 Vitz spoils the steering response.

Remembering history, Peugeot 205, EP82 Starlet, former had a torsion beam on trailing hinge line, latter had it on wheel center line with lateral rod support, steering responses were different from each other.

Then haw about H-shaped one on Vitz ? I'm afraid to write on this, rear axle is easy to move inconveniently in very initial stage on steering action, naturally because of loosing lateral support by another arm, lateral rod. So, such kind of standing point of view, lateral supports are indispensable factor to establish firm and confidential reaction on steering.

The comparison upper different constructions of rear axles proves the necessity of lateral supports, primitive imagination by kids may understand this physical property, however hard the engineers may prepare rhetorical flourish like "Self toe control new system".