I've found that the MC12 weaves all over the place on straights too, it would seem there is something very screwy with the physics model for this car. You have to pay 100% attention around the entire track without the customary breather down the long s/f straight
I was gripping the wheel like a madman last night.
I was drenched in sweat by the end of the race and felt shattered but elated
Perhaps the caster or toe needs tweaking to straighten the bugger out? Forgotten which it is for straight line stability
The car felt great in some of the turns though, i noticed i could drop Aagramns 550 through the last few corners to gain a handy gap from his faster 'straight line speed' Fezza on the s/f straight.