Poll, I tried all of yours, and lots of combinations, and they didn't work better. And I was champion last season, so, they can't be that bad.. But no problem, I'll try to improve, even though I don't know how..
Anyway, my driver stats:
Overall: 113
Concentration: 225
Talent: 158
Aggressiveness: 29
Experience: 116
Technical insight: 79
Stamina: 0
Charisma: 239
Motivation: 0
Thanks for your help!