Try my setting, this is actually one of my rally car tuned for Tahiti Maze, so the ride height is pretty high, and it is rear wheel drive base because of the hairpins in Tahiti Maze. (VCD is 20%, so the front wheel only help when you pull out from the corner) For the amatuer TT championship, this setting is good enough, I didn't really adjust it again for that. I had stage 2 turbo on, so I was running about 336hp, that's more than enough for the race.
Audi TT
Spring Rate: 9.6/7.4
Ride Height: 136/136
Shock Bound: Lv3/Lv3
Shock Rebound: Lv7/Lv7
Camber Angle: 2.5/1.7
Toe Angle: 0.0/0.0
Stabilizers: Lv4/Lv4
Brake Balance: Lv19/Lv18
LSD Initial Torque: 12/27
LSD Acceleration: 10/45
LSD Deceleration: 12/17
Gear Ratio:
Auto Lv27
Adjust 5th to 0.713
Adjust 6th to 0.585
Adjust Final Gear to 4.750
ASM: Lv0
TCS: Lv0
VCD: 20%