^ I apologise, maybe I didn't explain myself enough. I meant if the car was traveling constantly (straight line, constant speed)... Acceleration/Braking/etc. affect it regardless of whether or not it has a wing
I don't think a wing is excessive on any car, but I agree it should be 'matched' to the car's purpose. I think that maybe the wing on the pre-production model is a little excessive, but at the same time, it shoudn't have the same sort of wing as a Camry
What if the problem isn't snap oversteer? What if it's just the back losing traction before the front (oversteer), but they don't want to fix that with a higher spring rate on the back/front (wherever it is neeed) because it would the ride harsh? That problem could be fixed with a wing...