I enjoyed the responsiveness of the suspension and the steering, the latter being helped by the presence
of rear wheel steering.
For the first time, Porsche is using active
rear wheel steering in order to achieve even higher precision and lateral dynamics.
Overall, dynamic all - wheel steering —
with rear wheel steering angles of up to five degrees — makes it easy to maneuver when parking and offers precise and sporty steering on country roads and impressively comfortable steering on freeways.
Twin Turbocharged Z32s also featured active
rear wheel steering systems called «Super HICAS», first introduced on the HR31 Nissan Skyline, which was actuated hydraulically until 1994 when Nissan switched to an electric actuator.
There's also a limited slip diff and
rear wheel steering as standard, lightweight aluminium wheels, carbon fibre front wings and bumpers, Ceramic brakes and no fixed rear wing.
Improvement of Steering Response and Disturbance Response by Active Controlled Rear Wheel Steer
Its chassis is aided
by rear wheel steering, torque vectoring rear differential and an electrically assisted anti-roll bar.
But it's also the fact that we prefer to put in some kilos more in order to have
rear wheel steer because this is able to compensate.
We've already
mentioned rear wheel steering, but also of note is the Panamera's PASM action suspension management, enhanced PDCC chassis control and more advanced torque vectoring.
To improve turn in, Ferrari debuted its
own rear wheel steering system on the F12 Tdf, making the car feel hyper alert in tighter twistier sections of road.
The next - gen vehicle receives the Adaptive M Suspension Professional and a
new rear wheel steering system that BMW calls Integral Active Steering.
Given the success that
modern rear wheel steer systems have had on the handling of cars, making them both more agile and more stable, it might be worth the extra weight.
Active
rear wheel steering works in concert with the optional Magnetic Ride Control adaptive suspension to help the Cadillac corner almost as well as it cruises.
The chassis favoured understeer of course, but unlike some front drivers there was no lift - off oversteer or
passive rear wheel steering on a trailing throttle to get it around corners if you sent in too hot.
This option will allow a $ 45,000 Nismo variant of the Maxima to use all the tricks in the book to increase performance: track - ready springs, semi-slick tires with Nitrogen fill, a limited - slip differential and perhaps
even rear wheel steering.
Active
rear wheel steering behaves in two ways depending on the speed: Under 100kmph the rear wheels point in the opposite direction of the front wheels (actuated by two electric motors), thus providing better manoeuvrability.
Power flows through the rear wheels and, unlike the standard RC 350, no all - wheel drive or
rear wheel steering options are available on the F. Splitting power port - to - starboard across the rear axle is a standard Torsen limited slip differential.
It also adds a new feature, called «Integral steering» which combines active steering at the front
with rear wheel steering, improving high - speed stability and lower speed agility.
Under 50 km / h, the front and
rear wheels steer in the opposite direction, giving an impression of a shorter wheelbase and reducing the turning radius for better agility.
Despite being FWD only, the Megane RS will
feature rear wheel steering — likely in a bid to help reclaim its title as the fastest FWD car on the Nurburgring, a title recently claimed again by Honda.
The only difference between the Cup car and the 911 GT2 RS suspension's pickup points is a single non-solid joint connection in the car's
rear wheel steering system.
Perhaps the most significant change under the skin is the addition
of rear wheel steering that works out of phase with the front wheels at low speeds for improved maneuverability and in phase at high speeds for better stability.
It also incorporates
the rear wheel steering seeing in the 918 and 911 Turbo, which no doubt contributed to its 7 min 38 sec lap time.
The roughly $ 11,500 in options consists of the 34 - speaker, $ 3,700 Bose Panaray system, $ 3,300 magnetic chassis package (adds magnetic ride control,
rear wheel steering, and 20 - inch wheels), $ 3,100 driver assist package (front and rear automatic braking, adaptive cruise control, night vision), $ 900 comfort package (heated rear seats and cooled front seats), and $ 495 for the Phantom Gray Metallic paint.
The SQ7, with
its rear wheel steering, torque vectoring rear diff and elaborate anti-roll bars, feels even more competent and agile on the road.
Porsche has been using
rear wheel steer for years, but it's only just been introduced to Lamborghinis within the last year or so.
The four - wheel steering system is used to control the newfound responsiveness,
the rear wheels steering in the same direction as the fronts for stability, not in the counter direction for agility.
We'll let AP keep
the rear wheel steering so it doesn't drive like a truck;).
Though it lacks the handling delicacy of lighter variants, the Turbo still manages to rotate properly and position itself appropriately, thanks in part to the concerted electronic efforts of torque vectoring, active aerodynamics, and
rear wheel steering.
I got out of a 991.2 S road test feeling notable improvements in torque, steering and (with
rear wheel steering) handling.
Worn out rear wheel bearing so there was excessive play and the rear wheel was effectively causing the car to
rear wheel steer itself
Both processing units compare their outputs and can decide independently to lock
the rear wheel steering when the outputs differ.
Some of the weight saved by carbon fibre will have been added by the Centenario's
rear wheel steering.
Vehicle safety is not compromised when
the rear wheel steering is locked.
The rear wheel steering can be locked in a fixed position by both a hydraulic lock and a mechanical lock.
Integral Active Steering is available for rear - wheel drive BMW 7 Series models, which combines the Active Steering system for the front wheels with
rear wheel steering.
The rear wheel steer system is licensed from one80, and it is distributed through Eco City Vehicles subsidiary KPM - UK Taxis.
Pair up PASM with
the rear wheel steering and I felt like I was in total control at all times.
During more spirited or sporty driving, however,
the rear wheels steer in the same direction as those at the front, mimicking a longer wheelbase for greater agility and improved overall stability.
1 Some Mazdas in the late 80s had
rear wheel steering.