Looking For Feedback on First Tune

I’ve wanted to get into tuning for quite some time now. Yesterday, I finally found myself with a few hours to spare, so I decided to follow some guides and make my first “serious” Forza 6 tune. I chose to tune an S class Ferrari 458 Italia. I think it’s much better than anything I’ve ever done before, but there are still some issues with it I believe. It has a lot of off throttle oversteer that I can’t seem to correct, and it feels particularly awful over curbs on a lot of tracks. If anyone has some time and would like to help me out, I would love to hear some feedback for my tune.

It is listed under “Sclass lobby tun” in the store if you would like to download it. I will also provide upgrades and tuning numbers below so you can see what I did.

UPGRADES:

Engine (No swap):
Stock Intake
Stock intake manifold
Stock fuel system
Stock ignition
Race exhaust
Race camshaft
Race valves
Race Flywheel

Platform and Handling:
Race springs and dampers
Race front and rear anti-roll bars
Stock Chassis reinforcement
Sport weight reduction

Drivetrain:
Stock clutch
Stock transmission
Race driveline

Tires and Rims:
Race tire compound
Max tire width in front and rear
P47sc rims (in sport category, same weight as stock though)

Aero and Appearance
Race aero on front and rear

Conversion:
Nothing changed here

TUNING:

Tires:
27.5 Front
27 Rear

Gearing:
untouched

Alignment
-1.5 front camber
-0.8 rear camber
0.0 front toe
-0.2 rear toe
4.0 front caster angle

Anti roll bars
24.31 front
17.11 rear

Springs
654.3 Front springs
704.1 rear springs
4.6 front ride height
3.8 rear ride height

Damping
9.2 front rebound
7.0 rear rebound
6.0 front bump
4.2 rear bump

Aero
176 front
160 rear

Brake
60% brake balance
77% brake force

Differential
55% accel
7% decel

If you have any comments or suggestions on this tune, I would love to hear them!

First glance, build
I would replace the cams and flywheel

It’s looks like this car would have a lot of under steer with these settings. I would lower your overall spring rate. Lower your front swaybar, and bump.

This car is build.to have that throttle off over steer. You really can’t tune it out without creating other problems.

I normally run my brake bias 50% on mid/rear engine.
With 130-200psi.

I will give this car a try later, pretty busy with the holidays

I’m late to the party on this post, but I actually just recently figured out how to tame this beast. You’re on the right track. Rear rebound is the huge problem with this car.

With this car, I’ve found the same issue, that the rear-end is hard to control. The trick with this car is that the rear suspension needs to be significantly softer than the front, both springs and dampers. I don’t know why it’s so over-exaggerated with this car. I went so far as to set my differential deceleration to 0%. For whatever reason, the rear rebound on this car just sends the back end out of control so make sure that’s soft. I think I have mine set around 5…maybe 4.8. It makes driving this car much easier. Hit me up with questions.