So after a bunch of rivals laps and testing n’ tuning, I think I’ve settled on a setup.
I’ve also went and threw on a roll cage, adjustable anti-roll bars, and a race differential. Other than those upgrades and the race suspension, the car is stock.
PI is A660, weight is 3,415 lbs 52F/48R, 444 hp, 0.130 hp/lb.
Tire Pressure
35.0 PSI front and rear
Camber
-2.1 front
-1.5 rear
Toe
0.1 front
-0.2 rear
Caster
5.0 degrees
Anti-Roll Bars
9.00 front
22.00 rear
(I usually slam the settings to the min/max to zero out the values)
Spring Rates
915.0 lb/in front
800.0 lb/in rear
(As close as you can get)
Ride Height
4.4 inches front and rear
BUMP Damping
3.6 front
3.5 rear
REBOUND Damping
8.8 front
8.4 rear
Suspension Geometry
Zero everything out
Aero
79 lb front (max)
130 lb rear
Brake Balance
43%
(Set brake pressure to personal preference, I have mine at 200%)
Differential
70% Accel
20% Decel
I also tried the tuning setup mentioned in this post first,
around Mid-Ohio Short and I managed to do 1:17.540 (I hug the inside of turn 1 pretty hard into the pit exit lane… Blame how they made track limits lol). Afterwards I installed the other upgrades, spent a while doing my own setup, aaanndd turns out the way I normally tune wasn’t as good as I thought it was. I was able to keep up, but only just. I was able to set times within a tenth of the first setup I tried, but no faster. Bummer!
After thinking long and hard, and reading the other understeer discussions, I think the problem was how I was tuning my dampers. Think the values I listed above, but like +1.0 all around. After softening them all a bit I think it’s more manageable, though I think I’m still going to adjust my dampers with a lot more care and thought after all of this… I’ve been tuning for close to 4-5 years now, and I know for a fact I still have to put some more thought into the process.
I was able to drop the Mid-Ohio Short lap time down to 1:17.419 on the first flying lap, .121 faster. Doesn’t sound like a lot but it’s likely got more to give, and it’s definitely much better to drive than my own initial setup. But like I’ve said, I have some more tinkering to do
EDIT: Also playing on a controller, normal steering, ABS/TCS/STM off, lap times set on “manual” shifting