Stable Porsche 992 GT3 R Setup for Snetterton - Assetto Corsa Competizione.

Note: Negative toe might still work in the qualifying environment. But all my setups will for now utilize positive or only slightly negative toe as I expect it to be the more sustainable solution.

The Porsche just feels great with a balanced race setup. Ever so slightly willing to rotate on entry, stable in the middle off throttle and again willing to just mildly rotate on exit (apart from high speed, where its pushing a bit). It might be best simulation ACC has to offer. Everything feels really round and smooth, no excessive behavior in any situation.

Overall the new Porsche needs less steering as before and it's easy to turn too much. The high steer ratio helps to be precise.
Be careful on turn in. The tires likely need half a turn or more to build temperature on the surface and they are more snappy on entry when still cold. You can get them warm more equally by reducing camber and going for more positive toe. This will cost lap time in general, but might gain you time if the car is unrealiable on corner entries for you. While the car remains the crazy rotation off throttle, the center of that rotation seems far more in the center of the car now, than around the tip of the nose, which makes it rotate more like a mid engine car. The rear doesn't feel quite as exposed on corner entry, and you get actually turn into the direction you want to go, instead of controlling a permanent slide. In Q the weight balance is still very far to the rear, hard to do anything about it. I tamed it as much as I could and again no negative toe needed here for (most of the) lap time.

Snetterton
The track could be described in one word, but that'd be a bit short. The main thing here is traction. And while the Porsche does have it, even for the planted rear end this isn't easy. You will likely gain time here by swapping TC as every slow speed exit is going to be costly with TC3. I use one button that allows TC1 on a short press and goes back to 3 on a long press. Don't be scared when the rear moves a bit under braking into t1 and braking after the back straight. It should stay controllable, but the direction change into the right hander after the straight needs to be carefully done, same as that into the last corner. It's best to somewhat build a straight line before going from one side to the other. Don't release the brake too quickly in these situations and the car will find its grip. The kerbs are nastly, make sure to not have too much steering applied when yeeting onto them and don't lift fully in fear, else you'll spin. 

Driving

• Aim for late apexes and dont shy away from a short shift or staying in the higher gear option in the first place
• your brake is more than a means of deceleration, it also controls pitch and especially in Q this will be key to managing rotation on corner entry - most pronounced in in the fast T1 and 8, but also the slow corners, like the hairpin, need careful trailing to not lock the front tires
• on throttle the car will keep rotating, dont just floor it as that might exaggerate it - take a close look at my throttle traces.
• dont steer too much, progress into it, be ready to steer neutral on exits

Adjustments

• If too oversteery: Stiffer front spring (this will lead to more oversteer later in the stint, try the other options first), stiffer front roll bar, less rake. One click at a time.
• The brake bias is tricky. If it's too far forward the front will suddenly regain grip and the rear snaps. If too far back the rears might lock. Higher ABS here if you cannot handle it, but likely at a time loss. Clean trailing will pay off.
• higher preload can give more turn in stability, but will come with more nervous exits
• lowering front and adding rear camber might further stabilize the car (in race)
• lowering the caster also gives more predictability
• Some drivers might like a car with less rake for better drivability. It does not seem to be too problematic to lower the wing in turn for 2-3mm lower rear ride height.
• rear tire wear remains an issue. Lower camber all around the car might help paired with more positive rear toe - but its just something you can't fully control. Adding more understeer with higher ARB or a lower rear ride height will be more impactful

Tire pressures
Aim for 27.0 entering the fast corners for solid support from the tire without surprises. You can play with the fronts at lower pressures, so they develop some temperature. Yet we have a lot of high load corners here and a stiff tire feels much more communicative than a soft one.

Lap times
Q fuel: 17L (This is safe to use for the sprint races adding the necessary fuel of 48L - maybe add 1 click of rear ride height)
R: 93L (including formation lap)

LFM: For the shorter LFM races you'll likely be best advised with the Q set and a bit of fuel, less front pressures, but without any other changes - if anything increase rear ride height by a click.