I tend to lower the steering ratio because I like to have a more responsive GT3 when I turn my wheel while putting very little angle.
Don't hesitate to raise the steering ratio by 1-2 clicks if you are used to playing with more steering ratio.

TC: - I recommend the TC3 to be safe.
      - TC2 if you are good on the M4
      - TC1 or OFF if you master the M4

HotLap/Qualifying lap adjustement:
- Front Target psi tyres at the end of the lap 26,4-26,6
- Rear Target psi tyres at the end of the lap 26,5-26,6
- Front Toe: increase near to -0,20 if you want more turning OR decrease near to -0,15 if you want more stable (it depends on the feeling of player)
- Rear Toe: increase near to 0,02 if you want more stable OR don't touch
- Front Antiroll Bar: decrease 1 click if you want more turning OR increase 1 click if you want more stable or don't touch
- Rear Antiroll Bar: decrease 1 click if you want more turning OR don't touch
- Rear Bumpstop Range: increase 1-4 clicks if you want more stable or don't touch
- Rear Ride Height: decrease 1 click if you want more stable OR don't touch

Race adjustement (advice): Adjust based on race duration. For 15 minutes, you can keep the qualifying setup. For endurance with a 1h/1h10 stint, opt for a slower setting for pure performance but consistent over the duration of the stint.
- Front Target psi tyres at the end of the lap 26,5-26,6
- Rear Target psi tyres at the end of the lap 26,6-26,7
- Front Toe: increase near to -0,20 if you want more turning OR decrease near to -0,15 if you want more stable (it depends on the feeling of player)
- Rear Toe: increase near to 0,02 if you want more stable OR don't touch
- Front Antiroll Bar: decrease 1 click if you want more turning OR increase 1 click if you want more stable or don't touch
- Rear Antiroll Bar: decrease 1 click if you want more turning OR don't touch
- Rear Bumpstop Range: increase 1-4 clicks if you want more stable or don't touch
- Rear Ride Height: decrease 1 click if you want more stable OR don't touch
- Front Brake Ducts: it depends on the temperature
- Rear Brake Ducts: it depends on the temperature

My best lap with this setup: 8:05.697 (on a mega lap, there is the possibility of doing 04.9 mid, so you can improve so much my time)

Good Luck and Have Fun.

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