
Originally Posted by
niky
We already have a thread about this, don't we?
FWD was designed for two things: Economy and safety. A FWD car is more economical because the drivetrain is lighter (no driveshaft travelling the length of the car). It's safer in slippery situations because a prod of the gas pedal will not send the car spinning (a danger on rear wheel drive vehicles). Also, since the weight of the engine is over the drive wheels, it has more traction than a traditional front-engine rear-wheel drive car.
RWD is technically better for racing, as, blue says, since they distribute the workload of the tires evenly. But this all depends on the design of the vehicle.
As for the other assertions... it all depends. All front-engined cars, whether front, rear or four-wheel drive tend to "push" or understeer on corner entry because the weight of the engine is over the front axle.
Some rear wheel drive cars get around this by being designed for a 50:50 or even 45:55 weight balance. With any rear wheel drive car with good grip and/or an LSD (preferably both), you can counter understeer in some corners with oversteer. But this is never the fastest way through a corner.
Some front wheel drive cars get around this by rear suspension design and the use of an LSD. The LSD reduces understeer under acceleration out of a corner, while a stiffer rear suspension helps the car rotate faster (in some cases, inducing oversteer).
And whether front or rear wheel drive, the car will snap sideways if you let off the throttle or hit the brakes mid-corner. How badly it will snap, or if it will snap at all, depends on specific design and weight distribution.
The advantage of front-wheel drive cars on track is that throttle-understeer can be used to counter snap-oversteer, and they're inherently more stable due to the front-heavy weight distribution, allowing you to push harder. The advantage of rear-wheel drive in these cornering situations is that throttle-oversteer gives you more options in tighter corners. And, over multiple laps, the aforementioned distribution of load makes for more even tire wear.
For beginner or intermediate drivers, front-wheel drive will often be as fast or faster. For experts, rear-drive usually wins.
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But in the end, the argument is moot, since it ignores the most important factor... engine placement. A front-engined rear-wheel drive car is no match for a mid-engined sportscar or supercar. A mid-engined car has optimum weight balance and a lower polar moment than a front-engined car (in other words, with the weight concentrated near the center of the car, it can spin faster). But again, the actual handling abilities of the vehicle depend a lot on specific design.