F40 Suspension Tune

[Voodoovaj]

I am editing the first post because so much has changed since the game was released and this tune was now invalid.

So, head on over to my site and punch in the number for the car. I dropped the weight to 1122kg and I went with a ride height of 80 (the wizard will give you front and rear ride heights).

Now, most of the numbers are right on, but a few things need a bit of a tweak. First, DO NOT get the uprated clutch. It causes too much engine braking on downshifts which can lead to rear lock ups.

Also, reduce the rear compression damping to 3 and raise the extension damping to 9. Lastly, so the Anti roll bars of 3 front and 2 rear. You can go 3 and 3 or 4 and 3 depending on your style. I happened to like the 3/2 combo.

Also, set you front/rear brake bias to 2/3

 

[LatinInferno]

Using my formula https://www.gtplanet.net/forum/threads/spring-rate-formula.294364/ I applied it to the F40.

Given the rear only goes as low as 11.22, and the weight with all stages is 1122kg, it was easy to figure that the rear had to be set to 100mm, which would mean a perfect 50/50 weight distribution. I used that to determine front springs and BOOM .. AWESOMENESS.

Your the MAN!!

 

[gt40driver]

This is a great tune! Thanks! Can you give me some help with the transmission tuning?

 

[Voodoovaj]

This is a great tune! Thanks! Can you give me some help with the transmission tuning?

I have to say that I'm a bit at a disadvantage on trannys without the drag strip from GT5. I just make all the gears as short as possible and then lower the final drive.

 

[pmgolf]

LSD values?

 

[Voodoovaj]

LSD values?

30/5/5

 

[Gentoo64]

I find the only LSD I can drive the F40 with is 60 / 60 / 60 and even then it's got so much lift off oversteer I can't get around a track like Nordschleife without spinning, I've tried maximum understeer with all settings too... it's good on short tracks if I'm extremely gentle and almost always on throttle, but I'd love to know how you people are driving this car with no assists on normal tracks with sweeping bends :s

 

[MrGrado]

Standard wheels, rear camber 0.0 and the skill set of a cat.

Watch your speed, watch your line and watch your input.

 

[Gentoo64]

I'm gona try 30 5 5 on the LSD, LSD is most important option on these MR cars it seems, I've been trying to tune this car for days now and getting pretty pi**ed off with it tbh it seems like a bad egg in the game, maybe glitch with some physic like weight distribution or something, I cannot take sweeping bends with this car whatsoever so I was assuming the decel LSD had something to do with it, raising it helps (even to 60) but its very dodgy.

 

[SKD420]

It's not the LSD it's your technique. You don't lift all the way off the gas in mr cars. The weight transfers to the front the back gets light and you spin. Control your weight transfer.

 

[Gentoo64]

I don't even mean 100% lift off, it seems to want to spin for me nomatter what settings, even if I'm crawling like 20mph

 

[JuiceMcGoose]

Using my formula https://www.gtplanet.net/forum/threads/spring-rate-formula.294364/ I applied it to the F40.

Given the rear only goes as low as 11.22, and the weight with all stages is 1122kg, it was easy to figure that the rear had to be set to 100mm, which would mean a perfect 50/50 weight distribution. I used that to determine front springs and BOOM .. AWESOMENESS.

Your F40 tune did better than mine. Good job. I see you ran racing softs. I did my original tune on racing hards so I tried your tune on hards and made a couple of changes. Rear camber to 0.0, Rear toe to 0.32, LSD to 5/7/5 and race brakes to 4/1. With these changes your excellent tune makes the F40 stable and predictable on race hards and should do well on lesser tires, something that would probably surprise anyone who has tried to tame this beast.

 

[Voodoovaj]

One thing that people tend to not realize is that this is optimized game physics and not a full blown physics simulation. I'm finding that oversteer is cured in all cases by raising the rear end. Not sure why yet, but it works.

My guess is that the center of mass calculation is affected by the pitch and roll of the car. If the car's initial state is pitched forwards, the center of mass is also moved forward. The same should be true for nose heavy cars, but I haven't verified.

 

[LudiSpeedGO]

One thing that people tend to not realize is that this is optimized game physics and not a full blown physics simulation. I'm finding that oversteer is cured in all cases by raising the rear end. Not sure why yet, but it works.

My guess is that the center of mass calculation is affected by the pitch and roll of the car. If the car's initial state is pitched forwards, the center of mass is also moved forward. The same should be true for nose heavy cars, but I haven't verified.

Yeah, this is the only thing I can figure too. I hate how the car is practically undriveable stock, and what is with the F40 weighing 1300+kg stock, I'm pretty sure they weigh around 1100kg stock. I feel like this car is all types of screwed up in GT6!

But between your tune and "PRAIANO GT6 TUNES" I have come up with a pretty solid tune.

I know a pretty easy fix for this car is to force a understeer tune and you can pretty much do that with making the diff like a open diff. This is fine until you try to give it some power on corner exit and it just plows straight. So I fiddled with the diff and pretty much have it lock on hard acceleration.

There is a trick to this type of tune though and like other MR cars throttle lift and braking can upset the cars balance, but I have found the stock F40 cranked this issue up to 11! So the trick to my tune is being able to trail brake without upsetting the cars balance (its a fine area but you can do it) and also give power-oversteer to fix the understeer on corner exit.

So with my tune you trail-brake into the apex and maintain open to mid throttle input to the exit, then once the steering is some what straight give her the beans!

When it's all said and done the F40 is still a beast to handle, but I have managed to get around Tsukuba in 53.6 seconds. I consider this pretty quick for this car. I pretty much have every upgrade minus racing-exhaust because IMHO the semi-racing exhaust sounds the best . I also have the stock transmission because I like the feeling of rowing through the gears in a car of this era.

I will put up my tune here soon if anyone wants it.

Cheers!

 

[dc1]

I have a tune on mine that did 7:10.803 on nurburgring. I am using a controller with abs-1 as the only aid. Car is on sport soft tires and tuned to 550pp. I would like to compare times/tunes if anyone is interested. I am not the best driver but I feel with practice I can get to 7:05 range. A really good driver could get 7min or less.

Edit: 07:08.801
Getting better with it!

 

[MrGrado]

I got 7:11.001 on 2nd Jan. I have the replay, this would have been while MR cars had wooly handling. Can't be sure of tyre grade or PP, but I think 536PP and sports soft.

 

[LudiSpeedGO]

Oooookay??? I swear my F40 that I just drove before the 1.05 update was not doing wheelies under full throttle in first or second gear exiting a corner! I didn't see any handling fixes in the update, but for some reason my tune is apparently a wheelie tune now hahahaha! Well back to the drawing..err...tuning board...

 

[romynovanda]

Using my formula https://www.gtplanet.net/forum/threads/spring-rate-formula.294364/ I applied it to the F40.

Given the rear only goes as low as 11.22, and the weight with all stages is 1122kg, it was easy to figure that the rear had to be set to 100mm, which would mean a perfect 50/50 weight distribution. I used that to determine front springs and BOOM .. AWESOMENESS.

Thank you it's awesome
makes f40 from zero to hero

 

[romynovanda]

Using my formula https://www.gtplanet.net/forum/threads/spring-rate-formula.294364/ I applied it to the F40.

Given the rear only goes as low as 11.22, and the weight with all stages is 1122kg, it was easy to figure that the rear had to be set to 100mm, which would mean a perfect 50/50 weight distribution. I used that to determine front springs and BOOM .. AWESOMENESS.

Do you have tuning garage or another tuning car?

 

[Voodoovaj]

Yep, look for The Wizard or go to my site. It's in my signature