Auto Veteran - Why Aren’t the Rear Tires on Cars Made to Turn Like the Front Tires?

Why Aren’t the Rear Tires on Cars Made to Turn Like the Front Tires?

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Auto Veteran
Updated on Dec 03, 2024

Have you ever wondered why the rear tires on cars don’t turn like the front tires? You might think that having all four tires turn would make the car easier to drive and park, but that’s not always the case. In fact, most cars are designed and engineered to have only the front tires turn, while the rear tires stay straight.

In this article, we will explain why this is so, and what are the pros and cons of having rear tires that can turn. We will also tell you about some cars that have rear tires that can turn, and how they work. Let’s get started!


The Reason Why Most Cars Have Only Front Tires That Turn

The main reason why most cars have only front tires that turn is because of the way cars are built and how they work. The front tires are responsible for steering the car and changing its direction, while the rear tires provide power to the car and help it move forward. This is called a front-wheel drive system, and it is the most common type of system in cars today.


Having only front tires that turn makes the car simpler and cheaper to design and manufacture. It also makes the car lighter and more fuel-efficient, as it does not require additional components such as a rear steering mechanism, which would add weight and complexity to the car. Having only front tires that turn also makes the car more stable and predictable, as the rear tires follow the front tires and keep the car in balance.


The Pros and Cons of Having Rear Tires That Can Turn

However, having only front tires that turn also has some drawbacks. For example, it can make the car harder to maneuver and park in tight spaces, as the car has a larger turning radius and needs more room to turn. It can also make the car less agile and responsive, as the car cannot change its direction as quickly or easily as a car with rear tires that can turn.

This is why some cars have rear tires that can turn, either in the opposite direction or in the same direction as the front tires. This is called a four-wheel steering system, and it is a rare and special feature in some cars. Having rear tires that can turn can provide some advantages in terms of maneuverability and handling, such as:

  • Reducing the turning radius and making the car easier to park and navigate in tight spaces
  • Increasing the agility and responsiveness of the car and making it more fun to drive
  • Improving the stability and safety of the car and reducing the risk of skidding or spinning out


However, having rear tires that can turn also has some disadvantages, such as:

  • Increasing the cost and complexity of the car and requiring more maintenance and repair
  • Taking up more space and weight in the car and reducing its performance and fuel efficiency
  • Making the car feel weird and unnatural to drive and requiring more skill and attention from the driver


Some Cars That Have Rear Tires That Can Turn

Four-wheel steering is not a new idea, and it has been around for a long time. However, it is not very common, and only a few cars have this feature. Some of the cars that have rear tires that can turn are:

  • The Honda Prelude, which was one of the first cars to have four-wheel steering in the 1970s. The Honda Prelude had a switch that allowed the driver to choose between two-wheel steering and four-wheel steering.  In four-wheel steering mode, the rear tires would turn in the opposite direction as the front tires at low speeds, and in the same direction as the front tires at high speeds. This made the car more maneuverable and stable, but also more complicated and expensive.
  • The GMC Sierra, which was one of the first trucks to have four-wheel steering in the 2000s. The GMC Sierra had a system called Quadrasteer, which allowed the rear tires to turn up to 12 degrees in either direction. This reduced the turning radius of the truck by 21 percent, and made it easier to tow and park. However, the system was also heavy and costly, and it was discontinued in 2005.
  • The Chevy Hummer EV, which is a new electric truck that will be for sale in 2023. The Chevy Hummer EV has a system called CrabWalk, which allows the rear tires to turn in the same direction as the front tires at low speeds. This enables the truck to move sideways, like a crab, and to fit into narrow spaces. The system is also integrated with the electric motors and the suspension, and it is expected to be very advanced and innovative. 

These are some of the cars that have rear tires that can turn, and how they work. They are all very interesting and impressive, but they are also very rare and special. Most cars still have only front tires that turn, and that is probably the best option for most drivers and situations.


Conclusion

In this article, we have told you why most cars have only front tires that turn, and what are the pros and cons of having rear tires that can turn. We have also told you about some cars that have rear tires that can turn, and how they work. We hope you have enjoyed reading this article and learned something new and interesting. If you have any questions or comments, please feel free to share them with us.

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