Put 3 fictional, identical cars on a road course: one FWD, one RWD, and one AWD.
FWD car- left in dust at start line (no traction once weight shifts to rear), understeers like crazy in corners (same problem, physics 101), needs a lot of extra power or traction control devices to overcome the inherent lack of traction, but will be lightest of the three cars (no driveshaft) so may be able to catch up on back straightaway.
RWD car- back tires spin at start line but quickly grab when the weight transfers, can be steered around corners with throttle (if driver is good enough to control it), easily outruns the AWD car in straights due to less driveline friction/rotating mass, weighs only slightly more than the FWD car but better balanced.
AWD car- grabs hard & takes lead from start line, grabs with all 4 tires around corners, loses ground in straights due to more mass & friction, needs extra power to overcome added weight.
The bottom line is every situation will benefit a different drivetrain, but RWD is usually best for road racing. Rally requires more traction to get the power down, so AWD is king. FWD is safest on the street if you deal with snow, water, ice, etc. You cant spin it as easily as a RWD car.
FWD car- left in dust at start line (no traction once weight shifts to rear), understeers like crazy in corners (same problem, physics 101), needs a lot of extra power or traction control devices to overcome the inherent lack of traction, but will be lightest of the three cars (no driveshaft) so may be able to catch up on back straightaway.
RWD car- back tires spin at start line but quickly grab when the weight transfers, can be steered around corners with throttle (if driver is good enough to control it), easily outruns the AWD car in straights due to less driveline friction/rotating mass, weighs only slightly more than the FWD car but better balanced.
AWD car- grabs hard & takes lead from start line, grabs with all 4 tires around corners, loses ground in straights due to more mass & friction, needs extra power to overcome added weight.
The bottom line is every situation will benefit a different drivetrain, but RWD is usually best for road racing. Rally requires more traction to get the power down, so AWD is king. FWD is safest on the street if you deal with snow, water, ice, etc. You cant spin it as easily as a RWD car.