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Question:

What is the driving wheel of a modern car?

For a two wheel drive and a four wheel drive. Is it the front wheels or the rear wheels?

Answer:

For a 4 wheel its all four wheels For a 2 wheel drive, it depends on the car, ie Mercs are rear wheel drive and fords are front wheel drive
Short simple answer: For the majority of -cars-, the drive wheel is always the front wheel spinning faster(for instance, the one on the outside of a turn, unless the inside wheel lifts up) This is a loaded(suspended, driven, out-of-control) question! 2 wheel drive: A misnomer. Most cars are NOT 2 wheel drive. 2 wheel drive can mean front OR rear-wheel drive. But most 2 wheel drive cars have an OPEN differential, which means only ONE of the wheels get power. If a 2 wheel drive car has a limited slip differential, then 2 wheels will get power: which ones depends on whether the car is front or rear wheel drive. The engine is never locked to giving ONE specific wheel power. It doesn't work that way. As for four-wheel drive, the options are all over the place. Sometimes they are rear-wheel drive that can send some power forward if there's enough slippage/loss of traction. And sometimes they do this, but start out front-wheel drive. Sometimes they start out with 25% to each wheel and shift the power around as necessary, as well. And pretty much any combination you can think of in that.

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