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The Straits Times
|October 04, 2025
Why do some cars have four-wheel steering and how does it work?
Steering angles of the rear wheels of a car with four-wheel steering (4WS) are generally between four and 10 degrees, compared with between 35 and 45 degrees on the front wheels.
Rear-wheel steering is usually found in cars with long wheelbases.
At low speeds such as when the driver is manoeuvring the car in parking spaces, the rear wheels steer in an opposite direction to the front ones.
This reduces the turning circle and makes the driving of large cars, such as the long wheelbase BMW 7-series or Mercedes-Benz S-class, drastically more convenient.
This story is from the October 04, 2025 edition of The Straits Times.
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