I was looking at the manufacturer instructions on fitting a manufactuer Aero spec spoiler to my Saab and noticed that the fitting instructions says that the spoiler will "....reduce aerodynamic lift at the rear by 40%"
Not, 'by up to 40%' but 'will reduce by 40%' which seems like a significant amount, even though its a discrete 'lip' type spoiler.
In F1, you hear Martin Brundle saying that F1 cars have so much downforce they could drive upside down on a ceiling. Obviously, no production car is going to have anything close to the same downforce, but a 40% increase in downforce at the rear does seem signifcant.
Not that I care about downforce because the car never feels unstable at high speed, but does anyone know what sort of effect such a spoiler might have on mpg? I'm assuming there's going to be more drag and 'weight' at the back.
Not, 'by up to 40%' but 'will reduce by 40%' which seems like a significant amount, even though its a discrete 'lip' type spoiler.
In F1, you hear Martin Brundle saying that F1 cars have so much downforce they could drive upside down on a ceiling. Obviously, no production car is going to have anything close to the same downforce, but a 40% increase in downforce at the rear does seem signifcant.
Not that I care about downforce because the car never feels unstable at high speed, but does anyone know what sort of effect such a spoiler might have on mpg? I'm assuming there's going to be more drag and 'weight' at the back.