By chance was tire wear on? If so, could of been as simple as your tires giving out.
Nope. It ain't a bug as such either. I think it's been mentioned somewhere here, but just in case it hasn't, here goes.
It's a known issue with the Veyron in drag racing circles back in the days of SSR7. This happens to Veyrons that run ride height settings that are just too extreme for the car to handle, i.e when they are set at max/min. It happens when the car goes pass 230mph, where the wing drops. When it does so, the front of the car will lift off owing to some form of physics which I can't be bothered to find out more about. And when the front lifts off, car becomes unpredictable like a RUF, and if the front springs are too soft, it's not stable enough, and then GT5 magic physics come in, and bang, you're spinning. (or something like that, I act like an expert but am a mere enthusiast at best)
The way to solve this is to just lower the front. Top speed is sacrificed, but that's the only definite way to stop it from doing what it does. You could try stiffening the front spring rates right up
but I don't know if it helps it.
As for the corners
it's a Veyron, it doesn't do corners.
Anyway, as said above, I'm no expert, so don't believe 100% in what I say.
