Bill Auberlen Drives the M4 GTS Around VIR

[IntegraXTR]

On a side note I wished they kept those seats in the US model, and the orientation of the spoiler sides. I'm staring at ours right now and it looks off haha (I work at BMW of Honolulu).

Great car nonetheless and great video!

[positiveions]

One guy that I have high respect to.

[schnell325]

Originally Posted by IntegraXTR

On a side note I wished they kept those seats in the US model, and the orientation of the spoiler sides. I'm staring at ours right now and it looks off haha (I work at BMW of Honolulu).

Takes but a few minutes to change the spoiler sides

As for the seats, that is out of my budget to help you

[Captain Unknown GT4]

It seems you are getting upset, it seems you try to do what you can to get me down to your low level. But that will not happen. I can deal with people on internet without making fun of them or pushing them down in a bad way.

Yes, its more common to see people click and tune them selfe down to the beach if you know what I mean. If the average trackday owner start clicking away on GTS 2500 possibility settings, yes 99% of those people will most likely make car worse.

It could be better to just make it simple and choose from the 2 overal god compromised settings BMW found(mind you they find it from before and after datalogg).

Originally Posted by M4_GTS

You still don't have a clue and don't get it. So according to the book, you should only use the 2 settings provided. All the other "clicks" on the suspension adjustment knobs are all useless and just there for no reason.

I think you should just buy a regular M4 and stick with the 3 settings with the adaptive suspension. I am done with trying to explain this to you. It just seems like you are stuck in your little world of "following the book". It's your car, do whatever you want with it.

[Captain Unknown GT4]

Could be a langue issu, sorry for my poor english.

No, not overthinking. I just point out that aparently many people had no ide that nr.3 is wet setting. One need more downforce on wet.

Yes, they say, Max rear aero nr.3 is for wet track. Not that strange really.

Yes, that is hard, to know how to balance it up, thats why BMW done a big part of it. And It could be a god ide to listen to them, its very easy for the average hobbydriver to click the chassie down to less preforming.

You Said it, its not F1, hence I agree on that, for that reason it cold be a god ide to read the BMW instruction. Then Try out the 2 BMW tested setting, when people then out lap BMW factory Nurburgring laptime, well then try to click the chassie setting to futher improwment.

Originally Posted by bradleyland

Maybe it's just a language barrier, but it seems like you're way overthinking this.

What BMW have printed in the book are guidelines. There is no way they could say that max aero is only for use in the wet.

Balancing mechanical grip, aero grip, and vmax benefits is a difficult chore, and it varies from circuit to circuit.

This isn't F1. It's a production car with a great adjustable suspension and aero package that will be driven by owners at HDPE and track day events, many of which prohibit timing altogether.

[johnr265]

Originally Posted by Draper

Seatbelt chime?

Good point! I have a metal seatbelt end I use in my GT4 on track. Hopefully can get the same for car this easily.

[bradleyland]

Originally Posted by Captain Unknown GT4

Could be a langue issu, sorry for my poor english.

No, not overthinking. I just point out that aparently many people had no ide that nr.3 is wet setting. One need more downforce on wet.

Yes, they say, Max rear aero nr.3 is for wet track. Not that strange really.

Yes, that is hard, to know how to balance it up, thats why BMW done a big part of it. And It could be a god ide to listen to them, its very easy for the average hobbydriver to click the chassie down to less preforming.

You Said it, its not F1, hence I agree on that, for that reason it cold be a god ide to read the BMW instruction. Then Try out the 2 BMW tested setting, when people then out lap BMW factory Nurburgring laptime, well then try to click the chassie setting to futher improwment.

I would love to hear your explanation as to why every single LMP1 car running at the 6 hrs of CoTA ran the high downforce aero package at CoTA in completely dry weather this weekend.

[M3 Number 86]

Originally Posted by johnr265

That is an awesome video! He's really selling it! He's an amazing race car driver but what's up with wearing the harness AND the 3 point?

Belt chime is annoying as fuck lol

[M3 Number 86]

You guys talking about aero this and that. Pfft. My high kick e90 spoiler has massive downforce at the rear yo!

[Captain Unknown GT4]

@bradleyland, well I would not even go there, mention a streetcar vs LMP1. Then again not surprised you did reach out for that one.

Please, the GTS is no hardcore producer in the aero anyway, 12kg downforce front if max out front lip. Rear max its 40kg( @ 200km/h)
GTS is far from producing big aero Numbers like 991 GT3 RS, its not even close. Still its not al about aero.

Have you seen the angle on a Max out rear GTS spoiler? Then you put it to nr.2 setting, its not like its positive in lift you know due to that. It still make a bit of downforce, very much On the fast track Nurburgring as you often go way past 200km/h.

You got 5 sections of long 200+++km/h on the normal IP( Industripool) or trackday. 4 sections of 200+++ on the average TF(Touristfharen)

That nr. 3 setting will slow you down on Nur I guess, but provide solid grip in wet. I guess BMW did notice during them 24 months and 50.000km of development. I could bee wrong, but the way I see it is if you are a solid driver the GTS is fastest on a fast dry track on aero setting nr. 2.

Its not al about aero anyway.
This gets me thinking of my GT4, all people Max out rear on GT4, wich make that car even more understeery than it alredy is. That car on then 245 front is so understeery on them grippy 295 rear, Max out rear wing and the car understeer even more.
Still I only ride fast tracks and dont mind a loser rear, I know I will test both settings anyway. As well datalogg and see where I get in terms of feedback.

[goj]

Originally Posted by johnr265

That is an awesome video! He's really selling it! He's an amazing race car driver but what's up with wearing the harness AND the 3 point?

Safety first!

[bradleyland]

Originally Posted by Captain Unknown GT4

@bradleyland, well I would not even go there, mention a streetcar vs LMP1. Then again not surprised you did reach out for that one.

Please, the GTS is no hardcore producer in the aero anyway, 12kg downforce front if max out front lip. Rear max its 40kg( @ 200km/h)
GTS is far from producing big aero Numbers like 991 GT3 RS, its not even close. Still its not al about aero.

Have you seen the angle on a Max out rear GTS spoiler? Then you put it to nr.2 setting, its not like its positive in lift you know due to that. It still make a bit of downforce, very much On the fast track Nurburgring as you often go way past 200km/h.

You got 5 sections of long 200+++km/h on the normal IP( Industripool) or trackday. 4 sections of 200+++ on the average TF(Touristfharen)

That nr. 3 setting will slow you down on Nur I guess, but provide solid grip in wet. I guess BMW did notice during them 24 months and 50.000km of development. I could bee wrong, but the way I see it is if you are a solid driver the GTS is fastest on a fast dry track on aero setting nr. 2.

Its not al about aero anyway.
This gets me thinking of my GT4, all people Max out rear on GT4, wich make that car even more understeery than it alredy is. That car on then 245 front is so understeery on them grippy 295 rear, Max out rear wing and the car understeer even more.
Still I only ride fast tracks and dont mind a loser rear, I know I will test both settings anyway. As well datalogg and see where I get in terms of feedback.

So the laws of physics are different for LMP1 cars? OK. Got it.

I'm not saying that max aero is always faster. I'm simply saying that I have serious doubts that the guidelines in the documentation provided with the M4 GTS are intended to be the final rule in aero settings. At the end of the day, aero is about trading vmax for downforce, whether you're talking about an LMP1 car or a track day car.

[edwinm3]

Originally Posted by M3 Number 86

Belt chime is annoying as fuck lol

code it out

[Captain Unknown GT4]

Well lets see it the other way around then, if you was on a wet track in this 533hp 640nm(according to sport auto) powerwagon GTS, would you pay attention to BMW M GTS trackbook instructions to Max out rear wing to setting nr.3? Well I know I would, but then again I am driving around in this car as we speek.

Oh well its all ok to do what One like, but I will go Döttingerhöe fast track on nr. 2 if its dry!

[surewin]

Factory drivers are really at another level. I wish they posted the full lap-

[bradleyland]

Originally Posted by Captain Unknown GT4

Well lets see it the other way around then, if you was on a wet track in this 533hp 640nm(according to sport auto) powerwagon GTS, would you pay attention to BMW M GTS trackbook instructions to Max out rear wing to setting nr.3? Well I know I would, but then again I am driving around in this car as we speek.

Oh well its all ok to do what One like, but I will go Döttingerhöe fast track on nr. 2 if its dry!

In the wet, you always trade vmax for downforce, because of dramatically reduced grip. That kind of goes in line with my point: you don't set downforce from a static set of guidelines, you adjust for conditions.

The Nordschleife is a perfect example of a circuit where balance is incredibly difficult. Dottingerhoe is a long straight, but there are many medium and high-speed turns on the circuit as well. This is another really great example of how there is no "universal template" for downforce settings. Can you really make the case that the aero settings for Nordschleife would the same as Brands Hatch, or Zolder, or Laguna Seca, or VIR, or Mosport, or Big Willow? What if you're running at a tiny club circuit that's less than 1 mile in length? What if you're on an oval? All of these are nr. 2 if they're dry? Maybe they all are, but I'd be surprised if that were true.

[M3 Number 86]

Originally Posted by goj

Safety first!

what does the 3 point have to do with safety if you're wearing the 6 point already?

[goj]

Originally Posted by M3 Number 86

what does the 3 point have to do with safety if you're wearing the 6 point already?

I was joking..

[bradleyland]

Originally Posted by M3 Number 86

what does the 3 point have to do with safety if you're wearing the 6 point already?

9 points > 6 points

Clearly my logic is infallible

[IntegraXTR]

Originally Posted by schnell325

Takes but a few minutes to change the spoiler sides

As for the seats, that is out of my budget to help you

Haha right? I was tempted lol