Does anybody reliably know the drag coefficent and projected frontal area of an E34 B10 biturbo?
Downforce-rates (at certain speed) would be of interest, too.
As far as I know, drag coefficent (Cw) for the BT should be around 0,32 or 0,33. But 1) I am not suren and 2) there where different equippments of the car (1st gen. mirrors, 2nd. gen. mirrors, M-Style-sportmirrors, with/without rear-spoiler).
If somebody knows for E34 M5 (4-door) that might give a closer idea for B10 BT, also.
Why am I asking?
I regularily receive very good German magazine "SportAuto", where they do a "Supertest" with a high-performance car in every issue. At that test they lap the cars on Nürburgring Nordschleife (without GP-track), small circuit of Hockenheim and record all the cars aerodynamics (downforce@200km/h, drag coefficent, projected area).
I realized, that most modern cars have a really lame drag-coefficent again (more than 0,30), as the manufacturers during late 80`s and early 90`s really focussed on decreasing air-drag.
If I recall correctly, the AMG C63 in the latest issue tears big wholes in the air with a value of 0,33!!!
Thanks in advance!!!
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Best regards,
Tobias M
/=O====<ALPINA>====O=\
Last edited by TobiasM; 29th January 2009 at 21:26.
@PM: sorry, no interesst in what you asked, because any serious "potential buyer" could get this information from ALPINA, if that info is from substance for his decision in buying a certain car or not.
@aerodynamics: found at least data for the 1992 E34 M5 3.8, tested by AutoMotor&Sport in their September 1992-issue. It claims a drag coeffient of 0,32, a pojected aera of 2,06m², which gives a total drag of 0,66. That tested car was equipped with 1st-generation mirrors.
__________________
Best regards,
Tobias M
/=O====<ALPINA>====O=\
Last edited by TobiasM; 29th January 2009 at 17:52.
I realized, that most modern cars have a really lame drag-coefficent again (more than 0,30), as the manufacturers during late 80`s and early 90`s really focussed on decreasing air-drag.
Sounds like a nice search for info .
Drag coefficient is more "well make talk" for manufacturers. It can be very low but its more how big the multiply of the drag coefficient and projected area is. Like you said in your other post.
IIRC the Lamborghini Countach had a dramastic drag coeffiecient, but low projected area...
Sorry, as I read my starting post, I realize it could be misunderstood: I do NOT claim all modern cars to have quite bad drag-coefficients in general!!!
To be more precise I should have related my statement to todays top-of-the-line cars, e.g. the AMG`s, M`s, Audi RS`s, Subaru STI WRX abcdefghi`s, Mitsu Evo`s or just any modern car with quite huge openings in the front for air-intake / cooling...
__________________
Best regards,
Tobias M
/=O====<ALPINA>====O=\
Last edited by TobiasM; 29th January 2009 at 19:15.
Was a bit bored this evening and there - as every evening- was only bullshit on TV...so I build a small table that compares very interesting data from SportAuto-Magazine, e.g. Aerodynamics. ENJOY!!!
Yes, the B10 BT is still "up to date" from aerodynamic point-of-view, though todays top-4-door-cars are mostly better in performing...but BT torque is a friend that is not to underestimate ;-)
Quite interesting, too, is a closer look at aerodynamical balance between front/rear: the B3 BT und the Aston DBS are the cars best in balance (only 1kg diff.) Worst cars are the CLK 63 Black Series (42kg. diff.) and the Ruf RT12 (45kg. diff.)!!!
For all those "dreamcars" and "masterpieces of modern engeneering" you can say, that aerodynamics/drag is quite lame and non of them produces reasonable REAL downforce ("- xx kg").
WANTED - dead or alive- : P R O G R E S S, closer description: is supposed to have hidden in evolution-lines of cars, especially in cars from mid-1980`s to nowadays. Any hinds that lead to capture, will be rewarded with 1.000.000,- CyberCreditz
So go out folks, buy all the new **** - äähm, cars, I mean - and invest your money into search for progress
.
To///Mba
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