If your settings are on traction loss in rain/edge of road = low then racing soft tyres are better than rain. If it is on real then racing rain is best.
for the fgt this works well.
downforce max/max
diff 15/20/15
ride height -5/0
spring rate 16.4/17.5
damper ext 6/8
damper comp 5/7
anti roll 5/7
camber -2.5/-1.5
toe -0.25/-0.15
trans 249
brakes 4/1