BASE TUNES
Words of caution - setups likely to be 'loose' or oversteer in nature.
Solutions include: Moving Ballast forward, evening ride height, reducing rear spring, adding rear downforce, and probably adding bit of positive toe in at the rear. If you need specific help with making my tunes suit the way you drive, PM @StigsTC with your handling issues and he will help you debug his madness.
To manage the car's Top Speed just adjust the "final Drive" ratio, smaller number means more top speed. *Note, for Fuji I might have to make a new set of gearbox tunes for some cars just in case the straight is too long.
_-_-_-NISSAN SKYLINE GT-R-_-_-_
~~Suspension~~
-----------------Front / Rear
Ride Height - 75 / 68
Spring Rate - 12.52 / 15.49
Compression - 1 / 3
Extension - 2 / 4
Anti Roll Bar - 7 / 7
Camber - 0.0 / 0.0
Toe - 0.00 / 0.00
Brake Bias - 3 / 5
~~Gearbox~~
Reset
Max Speed: 200 km/h
1st - 4.253
2nd - 2.770
3rd - 2.267
4th - 1.909
5th - 1.628
6th - 1.405
Final Drive - 2.469
~~Drivetrain~~
Limited Slip Differential
Initial - 10
Acceleration - 11
Deceleration - 5
~~Body~~
Aerodynamics - 350 / 350
Ballast - 50kg @ +50
_-_-_-TOYOTA SUPRA-_-_-_
~~Suspension~~
-----------------Front / Rear
Ride Height - 75 / 70
Spring Rate - 11.47 / 11.84
Compression - 1 / 1
Extension - 1 / 1
Anti Roll Bar - 7 / 7
Camber - 0.0 / 0.0
Toe - 0.00 / 0.00
Brake Bias - 4 / 5
~~Gearbox~~
Reset
Max Speed: 200 km/h
1st - 4.755
2nd - 3.097
3rd - 2.548
4th - 2.146
5th - 1.829
6th - 1.571
Final Drive - 2.250
~~Drivetrain~~
Limited Slip Differential
Initial - 10
Acceleration - 10
Deceleration - 12
~~Body~~
Aerodynamics - 350 / 355
Ballast - 50kg @ +50
_-_-_-HONDA NSX-_-_-_
~~Suspension~~
-----------------Front / Rear
Ride Height - 65 / 70
Spring Rate - 14.59 / 14.46
Compression - 1 / 2
Extension - 2 / 1
Anti Roll Bar - 7 / 1
Camber - 0.0 / 0.0
Toe - -0.05 / 0.15
Brake Bias - 5 / 3
~~Gearbox~~
Reset
Max Speed: 200 km/h
1st - 4.745
2nd - 3.091
3rd - 2.524
4th - 2.125
5th - 1.813
6th - 1.568
Final Drive - 2.800
~~Drivetrain~~
Limited Slip Differential
Initial - 10
Acceleration - 9
Deceleration - 20
~~Body~~
Aerodynamics - 350 / 430
Ballast - 0kg @ +0
_-_-_-DODGE VIPER GTS-_-_-_
~~Suspension~~
-----------------Front / Rear
Ride Height - 65 / 62
Spring Rate - 15.51 / 19.00
Compression - 2 / 2
Extension - 2 / 1
Anti Roll Bar - 7 / 5
Camber - 0.0 / 0.0
Toe - 0.00 / 0.00
Brake Bias - 6 / 5
~~Gearbox~~
Reset
Max Speed: 220 km/h
1st - 4.769
2nd - 3.183
3rd - 2.481
4th - 2.052
5th - 1.758
6th - 1.522
Final Drive - 2.405
~~Drivetrain~~
Limited Slip Differential
Initial - 10
Acceleration - 9
Deceleration - 15
~~Body~~
Aerodynamics - 500 / 500
Ballast - 30kg @ +0
_-_-_-LAMBORGHINI DIABLO-_-_-_
~~Suspension~~
-----------------Front / Rear
Ride Height - 70 / 70
Spring Rate - 11.39 / 14.16
Compression - 2 / 1
Extension - 1 / 1
Anti Roll Bar - 7 / 7
Camber - 0.0 / 0.0
Toe - 0.0 / 0.0
Brake Bias - 5 / 5
~~Gearbox~~
Reset
Max Speed: 220 km/h
1st - 4.218
2nd - 2.707
3rd - 2.173
4th - 1.818
5th - 1.556
6th - 1.347
Final Drive - 2.800
~~Drivetrain~~
Limited Slip Differential
Initial - 10
Acceleration - 10
Deceleration - 15
~~Body~~
Aerodynamics - 350 / 375
Ballast - 30kg @ -50
If you find the base tunes have too much oversteer, @StigsTC has provided the following helpful solutions:
Yeah my tunes are pretty on the nose through the corners.
If you are looking for stability here are the most common fixes in order of what I'd get rid of first:
I tend to run my ballast as rearward as possible to make the car rotate aggressively on corner entry, however it gets pretty wild at times. If you are having issues getting to the apex cleanly move the ballast forward until the car settles down. 50:50 weight balance is pretty safe in most cases, I prefer 49:51 and rarely venture out to 48:52 unless the car feels like it is on rails, which Super GT and JGTC cars are for me.
If the rear spring is anything other than minimum available I've actively added it there to decrease understeer/induce more oversteer through the corner exit. This may not be ideal for you, so reduce it back to minimum. In cases where the front spring is HIGHER than Minimum, I'm trying to stop oversteer, so you might have to add more.
If I'm running a rear ride height lower than front ride height again I'm trying to reduce understeer and create some oversteer in the mid corner. Even it out (usually lower the front) to get things even so that the car will behave nicely as you get back towards throttle.
I try to run as little rear DF as I can, more top speed and more oversteer so its great for me. Adding downforce can give a car stability in mid corner, but also more drive traction out of corners. Usually there is nearly double the rear downforce available from minimum so you can greatly increase your rear grip if you don't mind losing a few km/h.
If all else fails, add rear toe until the car calms down. It is the least elegant solution as it generates understeer in all handling conditions (Entry, Mid, Exit) but sometimes you run out of solutions and have to just give up in order to make the car stable.
Old Base Tunes:
https://www.gtplanet.net/forum/resources/srt-viper-gts-r-team-oreca-51-00.3779/
https://www.gtplanet.net/forum/resources/bmw-mclaren-f1-gtr-race-car-97.3607/
https://www.gtplanet.net/forum/resources/lamborghini-nomad-diablo-gt-1-00.1602/
https://www.gtplanet.net/forum/resources/toyota-denso-sard-supra-gt-00.3058/
https://www.gtplanet.net/forum/resources/nissan-pennzoil-zexel-gt-r-01.2723/
https://www.gtplanet.net/forum/resources/honda-castrol-mugen-nsx-00.1470/