Need help to tune an Agera

Hello everyone, I’m not really the best at tuning and I cant tune anything but hyper cars at all so i need some info/help with the specifics of tuning. 1. I know the Agera is a hyper car but I cant get a good setup on it, do any of you guys know a setup that gives this car both good turning speed/sharp turning angle and grip so the car doesnt slide all over the place? 2. Can you guys tell me EXACTLY what each tuning component does under alignment, dampening, anti-roll bars and springs? I.E. what is the difference between having a high or low caster angle or the difference between stiffer or softer rebound, bump stifness. Thank you and a quick tip my assist are all off minus tcs and stm which are both on.

To address the issue of what each part does, start off by reading the box in the game. It is a little bit of a read but it tells you which way to adjust the parts, but it only looks at it from the point of view of over- and under- steer.

First of all, remember to focus on one problem at a time, and always focus on the side of the car that is having the problem.

Springs: Affect the balance of the car and the amount of grip the car displays on the road. If you make any changes to aero, there is a good chance you will make changes to springs. I suggest for the Agera to set the aero to max and then tune from there. IT will help you with the cornering.
If you understeer on corner entry or corner exit, lower your front springs.
If you oversteer on corner entry or corner exit, lower your rear springs.
The balance between front and rear springs also affect the balance between over- and under- steer. Low front end and high rear end will result in more natural oversteer while high front end and low rear end will drive with more understeer.

Anti-Roll Bars: are used to connect the left and right hand side of the car together during cornering.
If your car understeers mid-corner with no throttle, lower your front ARBs.
If you care oversteers mid-corner with no throttle, lower your rear ARBs.

Bump: in Forza 5 you can start a lot of builds with bump set all the way to 1.0 and tweak your way from there.
If your car under- or over- steers mid-corner under a constant throttle, make changes to your bump setting.

Camber: Camber affects the angle of your tires, take a look at Worm’s thread for more details and pictures. In Forza 5, you can run a pretty low camber effectively. Most tunes I share start off around -2.0 for front and rear and get tweaked from there. Camber affects your cars behavior on corner entry.

Toe: Usually can be left alone, look to Worm’s thread for more information. Affects the front to rear angle of the axle.

Caster: This game can run a higher positive caster due to the lower camber you can run. Most of the tunes I share start around 6.0 caster. Just remember, if you lower camber you must raise caster and vice-versa.

Now, remember that all of this has to work together, and sometimes you will have an issue, you tweak something and it results in problems elsewhere. It’s all one big puzzle and can be tackled by focusing on one problem at a time and always focusing on the end of the car that has the problem - the front, or the rear.

As far as an actual set up for your Agera, it depends on the build you have, and your driving style. Is there a particular class/PI you want to run your car at? I can then make a build and tune to share with you, or if you are willing to post your build, I can build it the same and tune it.

Hope this helps a bit.
~Drive

Thanks, this helps ALOT. You couldnt have explained it better. I have read the the ingame explanations but it just doesnt make much sense and seems to “beat around the bush” quite a bit. As for the builds i will post them tomorrow however the PI rating is at P 912, all parts on race, F5 wing and bumper, RS Wantanabe rims, and i do know that the tune i have setup is only slightly different then the stock tune.

EDIT:
The current tune is

Tires: 40.0 psi on front & rear.
Camber: -1.0 front, -0.7 rear.
Toe: 0.0 for both.
Caster: +6.3.
ARBs: 20.01 for both.
Springs: 620.0 front, 620.3 rear.
Ride Height: 3.1 front, 3.8 rear.
Rebound: 7.9 both.
Bump: 5.7 both.
Aero: 83 front, 258 rear.
Brakes: 42% rear, pressure is 120%
Race Diff: Acceleration is at 50% decceleration is at 80%.

I want to keep my gear ratios as is because it suites my driving style and are spaced well imo. My driving style i guess would be… hmmmmm idk i REALLY like the Lotus E21 and the Audi R8 (the Prototype 1 car) so that might help.

Edit 2: My current build is called “Agera Tune Proto” categories are good all round and best for speed. Also with the bump and rebound you mean set it all the way up to 10? You said to 1 and that seems really low.

Suggested adjustments in bold below

Tires: 40.0 psi on front & rear - you should be aiming for 32-33psi hot which usually means around 29ish psi cold - 40 is way too high.
Camber: -1.0 front, -0.7 rear. Try -2.5 or even more negative camber.
Toe: 0.0 for both.
Caster: +6.3.
ARBs: 20.01 for both. Try 15s
Springs: 620.0 front, 620.3 rear.
Ride Height: 3.1 front, 3.8 rear.
Rebound: 7.9 both.
Bump: 5.7 both. halve it
Aero: 83 front, 258 rear.
Brakes: 42% rear, pressure is 120%
Race Diff: Acceleration is at 50% decceleration is at 80%.Try Accel 15, decel 40 to start with.

If you don’t like these adjustments please post what you do not like about the car.

If I have time to get on today I’ll take a look at the build and try to start tuning it.

And no, I meant set it to 1.0, not 10.0. I got this concept from GENERAL SWIFT and it works rather well as far as I’ve seen. Set your rebound (the upper damping setting) as you normally would, then set the bump (the bottom sliders) as low as it goes and tune it up as necessary. Personally, I usually start somewhere between 1.0 and 2.0 and make changes as I need to.

As was stated in a different thread here, the rebound setting is what controls the return of the wheel away from the wheel well after it has been fully compressed. A low bump setting allows the wheels to absorb bumps quicker because the setting is set low and allows the wheel to quickly jump up into the wheel well. ← I’m just paraphrasing the other thread here…

As with other settings, remember, this is Forza not the real world, and some things that work in the game would not be used in real life.

Ok after taking you guys’ tips these are my current settings, please tell me if I misread you info and dun goofed on something.
Tires : 30.0 for both
Camber: _-_2.0 for both
Toe: 0.0 for both
Caster: 6.0
ARBs: 18.01 front, 22.01 rear
Springs: 582.0 front, 638.3 rear
Ride Height: 3.1 rear 3.8 back ( anymore or less gives extreme under/oversteer )
Rebound: 10.0 both
Bump: 1.0 both
Aero maxed for both: 110 front, 351 rear.
Everything else is the same. I’m gonna tune the diff later after i get a good balance on grip and oversteer ( i like some oversteer but not if i lose alot of grip ). So far this setup lets me take corners 5-15 mph faster than before and i just beat my lap time i did in the Pagani Zonda. Along with that my brakes have this odd habit of doing something new to this car, actually stop it.
@Edd ill try your setup after i tweak and finish the current one i have.

I assume that camber has a minus sign in front of it?

Whoops yeah i forgot to type the negative sign let me fix that. On the car its -2.0 for both.

I’ve built up an Agera to P912 and this is where I would be starting out my build before any fine tuning or tweaking. I used different rims, but they weigh the same as the Cyclone ones you used. I am not posting gearing as it is not relevant to the discussion as of now. Also, if I included race everything I got P911, so I left the Oil and Cooling stock to give the following:

P912
1150 HP / 951 torque
2881 lbs / 45% front weight
5.2L

9.6 / 6.2 / 9.4 / 9.2 / 6.7

Here is the base tune:

Tires: 28.5 / 20.0
Alignment: -2.6 / -2.2 / 0.0 / -0.2 / 6.6
Anti-Roll Bars: 22.91 / 18.81
Springs: 567.7 / 604.1 / 3.1* / 3.8*
Damping: 9.3 / 9.9 / 1.5 / 1.5
Aero:110 / 351
Brakes: 53% / 130%
Differential: 10% / 15%

  • = taken directly from your tune to use as a base

I will drive mine a bit and see what it’s like. I do think your tire pressure is still a little bit high. To get a good warm tire pressure, I typically set the driven wheels to 28.0 and any non-driven wheels to 28.5, though sometimes you do have to go a little bit lower.