Alright.. Here are the changes to the 3 cars mentioned earlier.
1: GT-R GT500 Stealth.
Suspension is pretty much untouched apart from the camber angles which i set to zero on both ends.
Final gear is set to 2.960
LSD is set to 7 10 7
This setup landed me a 6:30.905
Safe to say that there's more time to be found here considering i pulled off a 6:29.836 with the praiano tune.
2: Pescarolo C60
All i did to this is turning camber back to zero and adjusted the final gear to 3.000
My time with that tune. 6:29.885
3: Audi R10 TDi Stealth.
Same deal here. Camber back to zero and final gear to 2.850
Got a time of 6:30.300
To sum it up.
Very good tunes, either by themselves or as a basline to squeeze some more time out of.
Keep up the good work Shaun.
Edit: And just for good meassure i decided to lower the downforce back to stock values on my TS030 and improved to a 6:18.474.(Praiano tune). There's more time to be shaved off here as well.. LSD tweak is what this one needs to tame the slight wheel spin on the exits.