I gave your 573pp C8 Laviolette tune a go for a couple laps and here is what I found.
Test settings: Race soft tires, ABS 1, Real grip, and tire/fuel on
Trial Mountain: 1:26.585
Spa-Francorchamps: 2:23.120
The car's suspension and grip feel great, coping with the 624 ponies. You can really feel the weight distribution as you move around the track... It causes just a hint of over steer on high speed breaking and hint of under steer when near full throttle in the appropriate gear. Not a bad thing in the slightest. Tire wear is a little high, but this is to be expected from the camber settings on the car. Its has a great overall balance for a sub 1000kg ,over 600hp car without aero.đź‘Ť
I might have to try some ballast on my version of this car.
Oh, Way less drama on the straight at Trial Mountain.