front wheel drive has some massive advantages that make it the preferred format for 99 percent of drivers.
1. packaging efficiency, when front wheel drive is combined with transverse engine layout. By putting all of the driveline sideways over the front wheels, you create much more interior space for a given body size. A rear wheel drive front engined car will have its gearbox behind its engine and the two of them force the cabin to be shorter, as well as the transmission tunnel is large and takes up room in the cabin. This is a problem with all FE/RWD cars, but particularly when you start getting over 4 cylinders.
2. Traction. With the bulk of the car's weight over the front wheels, the front wheel drive car has much superior traction in poor grip conditions. In India it does not matter so much because india doesn't have snow/ice in most places, but ask an older person about how in the older days, fiats and ambys would get easy stuck in muddy conditions and spin their tyres without moving.
Now, it is becoming important in India again as cars are getting powerful enough to run into traction problems on rain slicked surfaces.
3. front wheel drive cars are much safer for non skilled drivers because they default to safe steady understeer, which is intuitive for most people. If the car isn't turning enough (understeer), you just turn the steering wheel more. upto a point. And if you've completely lost grip, you'll just slide straight till you get grip or you hit something head on. This combined with higher traction capabilities, makes front wheel drive far superior to rwd for most people.
For most people, rear wheel drive does not have the advantage.
the advantages of rear wheel drive:
1. If you have a lot of power, more than about 250hp in today's day, fwd cars will have problems with torque steer. That is, the drive shafts try to turn the wheels on the steering axis, thus causing interference with the steering. Not disastrous, but not fun. As most fast and/or big cars have a lot of power, rear wheel drive is preferred. But I have driven 300hp front wheel drive V8 engine cadillacs that were clearly better for being fwd, even though I prefer rear wheel drive.
2. rear wheel drive allows for yaw control at both ends of the car, but keeps the yaw control at front and rear distinct. In case you're wondering what yaw is, if a you imagine a car having 3 axes, x, y, and z, its rotation about the three axes falls into Pitch, roll, and yaw. if the Y axis goes front to back, x axis side to side, and z axis down to up, with the orgin of the axis in the perfect physical center of the car, the rotation about the x axis is the pitch, rotation about the y axis is the roll, and rotation about the z axis is the yaw.
rear wheel drive gives you an added dimension of yaw control. the steering controls yaw front of the car. driven wheels on a rear wheel drive car provide yaw control from the rear of the car. A well designed and tuned rwd car will have excellent interaction between the two yaw controls (throttle and steering).
THis ability to control your car through a sophisticated integrated blend of throttle and steering is what makes rwd so wonferful for enthusiastic drivers.
But this should not be confused with "good handling". Good handling is not just about yaw but also about pitch and roll, and some of the best handling and/or most fun cars in the world are/were front wheel drive such as 4 round headlight Integra Type R or Renault Clio Williams or the Peugeot 106 Rallye. But in the extreme, a car that has everything as well done as a good front wheel drive car, AND is rear wheel drive will ultimately be the best handling car.
I personally greatly favor rear wheel drive even for normal cars because I like the steering/throttle interaction of rear wheel drives cars, but I know that the best family sedans are all front wheel drive and for very good reasons.
So in short, each has its place. Though I personaly think that Front Wheel Drive is actually Wrong Wheel Drive. I would always prefer a rear wheel drive car, if everything else is equal. I drive rear wheel drive sports cars even in deep winter snow by using winter tyres and making out like a rally driver. |