Bmw M8 GTE Downforce Problems

N

Numrollen

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Beside the BoP problems with GTE (90% want to drive the porsch because its much easier, only Freaks take the corv) there is still a problem and perhaps its a bug:
We saw this several times in multiplayer, tested on SPA (Eau Rouge) and Indianapolis (Oval part of the GP). When a car is behind the Bmw the Bmw lose heavily on Downforce and spins, even with higher wing settings. This is horrible because these 2 "corners" are flat out and there is nothing i could do against the uplift.
 
Is this a bug? Can anyone confirm this problem so im not alone with this? I notice this only on very fast corners that only a few tracks have with some pressure (uphill/steep turn). We will test this week on watkins glen where we have not quite the same corner style but also one flat out fast corner.
 
sounds like a problem they were having with the Nascar cars. If a car was behind...and really close...it affected the downforce of your car. Might be a thread about it way way back.
 
Its a way more than "affected". You lose complete controll of the car. The pressure is like completely gone. I dont know about the nascar problem, dont drive them ;)
 
that what happened in this other thread. A car entering a turn would loose the back end if someone was trailing 10 to 15 car lengths back..(rough guess at the distance.) Not close enough to really even get the lead cars draft. I understand the lack of interest in the Nascar vehicles, but they may have found a solution, I can't remember, thread was a year or two ago. The cause and effect are similar enough to investigate. Good luck.
 
Perhaps a dev response or another personal that can confirm or decline it?

We drive at the moment on watkins glen and of course we also have the same problems. Not as heavy because the corners dont need that much downforce but while teamdriving we had the same incidents.
 
Numrollen said:
i feel a bit left alone with this topic. Arent there any GTE league with a tight field? :(:(:(
Click to expand...

Qualy separated by ~1.2s

http://simracing.club/ResultsSystem/vec/s12/d1r1.html

25 1 60 GTE Singularity Racing Martin Dyrlund 01:55.881 15.063 Porsche 991 30
26 2 97 GTE Zansho Goran Djordjevic 01:55.925 15.107 BMW M8 29
27 3 77 GTE Zansho Felix-Antoine Fortin 01:55.981 15.163 BMW M8 27
28 4 74 GTE Deuces Motorsports Club Adam Baldwin 01:56.025 15.207 Porsche 991 26
29 5 87 GTE Zansho Olivier Fortin 01:56.054 15.236 BMW M8 25
30 6 88 GTE SECORA Racing Zbigniew Siara 01:56.058 15.240 Aston Martin Vantage 30
31 7 83 GTE DriveGameSeat Racing Hermann Stocchi 01:56.294 15.476 Porsche 991 22
32 8 55 GTE Asombik eSports David Serra 01:56.297 15.479 BMW M8 27
33 9 64 GTE Satellite Racing Jos Araneda 01:56.340 15.522 Porsche 991 25
34 10 73 GTE Deuces Motorsports Club Daniel Pasztor 01:56.373 15.555 Porsche 991 29
35 11 84 GTE SpeedyMite Racing Alexander Jones 01:56.384 15.566 BMW M8 27
36 12 81 GTE Black Hawk Racing Kevin Jaeger 01:56.395 15.577 Porsche 991 24
37 13 76 GTE T3 Motorsport Simracing Bram Beelen 01:56.448 15.630 BMW M8 29
38 14 69 GTE Simracing For Holland Dennis Douna 01:56.662 15.844 Corvette C7.R 24
39 15 51 GTE World of SimRacing Jose Berenguer 01:56.682 15.864 Corvette C7.R 27
40 16 99 GTE Team Virtualracing Tim Neuendorf 01:56.832 16.014 Corvette C7.R 24
41 17 82 GTE Black Hawk Racing David Jundt 01:56.843 16.025 Porsche 991 25
42 18 68 GTE Team RSI Daniele Vidimari 01:56.890 16.072 Porsche 991 23
43 19 86 GTE Witchwood Fabio Cangioli 01:57.081 16.263 Corvette C7.R 28
44 20 98 GTE TeamRGPL Michal Sedlacek 01:57.091 16.273 Aston Martin Vantage 27
 
Numrollen said:
Ok. So, can you kindly ask the bmw drivers if they could confirm my problem? ;)
Click to expand...

OK, I've confirmed that others have the same problem. The developers know about and those drivers are hoping for a fix.

Here's a video of it happening:

Someone also says it happens with GT3 cars too and there's a thread dedicated to the issue here, but I don't have a link to that.

Here's a link to it happening in real life to Blancpain GT3 cars:

This happens in real life to NASCAR stock cars too, I've seen it on televised races.

Everyone wants real life vehicle and aerodynamic dynamics, but maybe this is too severe. I don't know, I've never experienced it in the SIM or in real life.
 
Do you have timecodes for both videos? Sure it could be some uplift aero but i cant belive its like we have discovered it.
 
Numrollen said:
Do you have timecodes for both videos? Sure it could be some uplift aero but i cant belive its like we have discovered it.
Click to expand...

I guess the time codes were lost with the copy/paste. The first is t=11383 and the second is t=5619. Note that I wasn't able to view the 2nd video as I'm geoblocked.
 
Ok thx. The 2nd Real life videos shows a plausible way: a real nearly no space very fast corner contact with wiggeling of the front car.
 
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