Hi. Can anyone tell me how to unlock the selections in the Tuning menu? The only one I can adjust is the tire pressure.
Lots of things are only adjustable once upgraded - have you done that?
You need to buy upgrades for the car first.
For anti roll bar settings you need to install front and rear anti roll bars, race
for springs settings, damping and ride height, race or rally springs
For differential settings, race differential
For gearing, Race or rally transmission