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04-11-2008, 11:18 AM | #1 |
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Does the M3 generate downforce?
I was reading over a thread on 6speed, and was just wondering, does the M3 generate downforce @ high speed, or just less lift? I would expect that, with the lack of an cover for the underbody + the very small spoiler, it would generate some lift. I mean, supposedly a GT3RS barely generated downforce!
Thanks... 6speed thread: http://www.6speedonline.com/forums/s...d.php?t=125504 |
04-11-2008, 11:57 AM | #2 |
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I would reckon on some lift at the very least. Very few cars without spoilers and splitters are capable of producing little lift, never mind downforce.
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04-11-2008, 12:22 PM | #4 |
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We have some data from the Supertest:
@ 200 kph: 10kg lift on the front and 23kg lift on the rear. Quite good they say. http://img208.imageshack.us/my.php?i...7030922ba4.jpg Best regards, south
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04-11-2008, 12:27 PM | #5 |
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Hahahaha!!! And they generate 4 hp per mirror as well.
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04-11-2008, 12:29 PM | #6 | |
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South, an off topíc question, can you confirm that the EDC on normal setting is dynamic in the sense that it will get harder automatically as you push the car on curbs etc...? Sorry for the off topic queston.
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04-11-2008, 12:30 PM | #7 |
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, but only with the high gloss finish.
Best regards, south
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04-11-2008, 12:50 PM | #9 | |
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Best regards, south
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04-11-2008, 12:52 PM | #10 | |
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Best regards, south
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04-11-2008, 12:55 PM | #11 |
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Thanks South! And, do the rear spoilers etc... that creat some down force cancel out the minor lift at say, 200kph?
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04-11-2008, 01:02 PM | #12 | |
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and @ gadget. Of course one would rather have downforce @ high speeds, and this would make the car even more planted, but a small amount of lift is really not major, as it wouldn't affect much. Either way, the more downforce, the slower but better handling (usually). |
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04-11-2008, 01:03 PM | #13 |
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Yes. More at those speeds - I believe, don't quote me on it. And they don't cancel it, they reduce it. But also, I would never get a wider and bigger spoiler in the back without changing the front with a splitter or something, because I wouldn't want to get more lift in the front than in the back
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04-11-2008, 01:03 PM | #14 |
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I heard a rumor that Dinan was coming out with a reflash for the mirrors. You gain another 2.7 hp each. Indeed, the Dinan badge is worth 3 lbs downforce alone. And not to be outdone, AC Schnitzer is coming out with carbon fiber splitters for the mirrors.
Seriously, if the car generated any net downforce then I would be surprised. I don't know if the numbers above for lift are good or not, but I'll give them the benefit of the doubt. Anybody know what the figures are for a GT3 with that big wing out back?
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04-11-2008, 01:05 PM | #15 | |
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For comparison the 335i generates 42kg lift at the front and 28kg lift at the rear at 200kph. And to quote another example (sorry Footie): The S5 has 52kg and 34kg lift at 200kph. Best regards, south
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04-11-2008, 01:05 PM | #16 |
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I wounder what difference is made by the splitter, diffuser and CLS boot lid in terms of additional downforce.
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04-11-2008, 01:06 PM | #17 |
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it does weigh 3700 lbs to begin with so it's not like it needs a lot of more downforce. I know on race track etc. it's good to have but likely in everyday situations downforce is not needed much.
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04-11-2008, 01:09 PM | #18 | |
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04-11-2008, 01:10 PM | #19 | |
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Also, as a comparison, the F430, with it's amazingly sexy underbody tray, and rear diffuser, "at 300km/h (186mph), generates 280kg of downforce (130kg front, 150kg rear)" |
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04-11-2008, 01:13 PM | #20 | |
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Best regards, south
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04-11-2008, 01:15 PM | #21 | |
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04-11-2008, 01:15 PM | #22 |
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Where do you get these! Do you have a depository of the supertests?
Really appreciate the info BTW, thanks. |
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