Steering a vehicle via the front wheels only is far from ideal. All four tyres carry the burden of taking the car onto a new path when the car is steered and the rear tyres and suspension are minutely side-slipped into place when you steer even a normal car. With four-wheel steering this de-stabilising transition phase is almost non-existent, and that allows you to accelerate and brake harder. So a properly designed four-wheel-steer system enhances agility.
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Rear-wheel steering – Boats and aircraft, they are steered from the rear and the world’s fastest car, the Thrust SSC – the one that broke the sound barrier – that was steered from the rear too.
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