Quote:
Originally Posted by kyrix1st
There's a reason why Huracan and GTR run RWD only on GT endurance series: weight. A 1600kg AWD G80 M3 (hypothetically speaking) would be quick in straights no doubt, but it will never have the same handling characteristics nor even close cornering capabilities as say, a 1350kg RWD G80 M3 with less unsprung weight, less rotating mass and better aerodynamics for maximum downforce. I believe these features are what M purists call for, not a stop light boy racer GTR copycat.
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Actually the real reason is: rules and regulations. AWD is not allowed in those classes, as simple as that. And xDrive only adds around 185 lbs of weight, not as bad as you think.
AWD always helps when you have lots more power than grip - look at WRC, Rallycross. That is not the case with an M3 just yet, but if it had 600BHP perhaps it too would need AWD to make it work well.