Front, Rear, Or All – What Drives Your Car?
Front, Rear, Or All – What Drives Your Car?
There was a time when most cars were designed as rear-wheel drive (RWD). Whether due to customer preferences or platform limitations, car manufacturers seemed hesitant to pursue other options. Over the years, that changed. Today, vehicles are built with front-wheel drive (FWD), rear, and all-wheel drive (AWD). While car enthusiasts might intuitively know what these terms mean, neophytes may not. In this article, I’ll provide an overview of how each works along with their inherent advantages.
Front-Wheel Drive
By far the most prevalent, FWD cars place the majority of the vehicle’s weight (up to 70%) in the front. While it can feel “slippery” to a driver who is unaccustomed with FWD vehicles, it actually provides more traction and better safety. Plus, there’s another benefit. Because the engine is located in the front of the car, transferring its thrust to the front wheels is more efficient than connecting a drive shaft to the rear wheels (as done with RWD cars). The result is that more performance is retained and fewer parts are required.
Rear-Wheel Drive
RWD cars used to be much more common than they are today. In many ways, they work in the opposite fashion of FWDs. Because most of the engine’s power is allocated to the rear wheels, a drive shaft and rear differential are required. The good news is that a car with RWD can accelerate quickly, which is why they’re commonly used in race cars. The bad news is that RWDs are inefficient in transferring horsepower from the engine to the wheels. Drivers who enjoy the feeling of fast acceleration will appreciate RWDs. However, it’s important to note that this type of drive also reduces the amount of controllable traction.
All-Wheel Drive
By now, you might be wondering why automakers allow half the wheels on their cars to basically lay dormant while the other half does the heavy lifting. AWD cars answer the question by allowing all 4 wheels to participate. In effect, the engine’s power is transferred through the entire wheel base. This provides better traction and more efficient performance, arguably the best of both worlds. AWDs are more expensive than RWDs and FWDs, and they use front, center, and rear differentials. That means more parts, added weight, less fuel efficiency, and greater complexity to the drivetrain.
Which Drive Is Right For You?
Most car experts agree that none of the 3 options above are necessarily the best type of drivetrain. It depends largely on what the motorist is looking for. FWDs provide more traction and less performance. RWDs offer fast acceleration and less traction. AWDs provide traction and performance, but do so at a higher cost while sacrificing efficiency. Use the overview that I’ve provided above to understand each drivetrain’s respective advantages and limitations. That way, you can choose the best option for your driving needs.
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Tags: Car Tips, Driveshaft
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