Fast Aston Martin Vantage V8 GT3 Setup for the Red Bull Ring - Assetto Corsa Competizione

General:
The Aston heavily relies on a lot of rake to generate downforce and to get the rear to rotate. Additionally it has similar suspension issues as the Ferrari and simply cannot dissipate the energy properly, which makes a few parts on any track quite tricky. However, I seem to have found a middle ground where the front end will occasionally bite and the car will behave predictably around the lap. The car does not need a lot of steering input, the chances that you overdrive the front are very high. Race trim should be better for the Aston than Quali in general. Tire wear is not very much and it will pay off the longer the stint goes. Let me know how you like it!

Electronics:
TC1 on 1-2 is enough, but TC1 on 0 might be faster. Any TC cut really hurts but even TC on 1 allows quite a bit of slip before engaging.
ABS should be on 3 at least - rather be safe than sorry! ABS 2 works as well but only with higher BB. 
Changing BB can make sense. Lower - like 59.6% - helps into the tight corners (but might lock up), but higher, until about 61% will help slow the car down in the hard braking zones, especially T1.

Red Bull Ring:
A nice new addition to the game! While the straights seem long, you don't really reach high speeds. I'm not sure if lower downforce/drag setups will actually work, because they would only start gaining late on the straights. I couldn't see much disadvantage with a max wing setup on the straights. The exit speed onto the straights is crucial. Sacrifice entries, set it up wide and late and work towards straight exits for best traction and acceleration. Kerb wise there is a lot allowed: Just keep one tire on the rippled kerb, but you can safely ignore the white line.

Adjustments:

• reduce front bump stop range if braking into corners is an issue, or stiffen front spring. This will also help with bottoming but will ultimately be a little slower
• move BB forward if too loose into the corners, more front ARB could also help here (yet it will make slow corners too understeery imo)
• race setup might be able to run more negative rear toe still. I find it balanced currently, but I'm sure it would be faster maxing this setting out. Just gets quite edgy to drive and more error prone
• LAST CORNER: During braking you might bottom out. Don't slam the brake! Dialing this out causes issues all around the track. You can adjust if you need with whatever keeps ground clearance longer: Higher ride height, stiffer front spring, less range etc.
• There is a direct trade off between rotation and traction. If you add rake, you will lose traction. If you increase rear spring stiffness, you will lose traction. You always will have to counter any adjustments with another adjustment elsewhere.

Driving:

• Basically all turns need careful trailing, but you can still push the higher speed corners - the car tolerates a lot of yaw (if you can get it to rotate, mainly using the brake)
• The initial steering input and response is very important to get right as the car will gravitate towards understeer mid turn
• The earlier you can apply throttle the better, in several corners the car is on the verge of producing power so hit power before you actually need it - and mean it!
• the turbo takes some time to spin up, but when it does you have a lot of power available. This makes the throttle pedal non linear and gives quite some delay with actual engine output. You need to predict this and plan it into the driving. I.e. quite early throttle for the power to be there on exit
• bumps are tough on the car, raise ride height if unbearable (2mm rear for every 1mm front, if rear tops out, reduce wing), but the bottoming should be limited here
• aim for late apex in hairpins, try to trail deep, immediate throttle [+management], no coasting
• shifting at 7000-7100 here pretty much. Stay close to the window.
• it can happen that if your minimum speed becomes too slow the chosen gear stops working for too low rpm. Try to stick to the higher gear and keep the speed up than being forced to shift down. Though, first gear helps with entry rotation. Depending on the fidelity of your right foot you can accelerate in first. If not, shortshift to 2nd.
• Make sure to attack the kerb in the middle sector's right kink, the car can take it and immediate full power to keep the rear going!

LFM:
The race setup is dialed in for 1 hour fuel (107l). For medium tank increase rear ride height in 1mm steps to your liking. Other options are to increase rear rollbar, or decreasing front, or simply increasing the negative toe on the rear.