Suspension: Height and stiffness Brakes: Sensitivity, power and balance. Normal cars brake mostly with front brakes, but rally cars have about 50/50 front and back brake balance (Correct me if i'm wrong) Also I noticed, that some of these cars have brakes that are "too good" for the model, like example these older cars with drum brakes in the front. Old american cars from 50-60's didn't brake that well and the drums overheated (read: no brakes) Ari
Suspension is Adjustable under the "Tuning" Tab when you go into the vehicle customizer if I recall but for brakes no chance but it should be added I hope
Tuning tab of the parts selector has suspension adjustment where applicable. You may need to fit adjustable coilovers
As far as I'm aware, brake thermals (i.e simulated brake fade) is currently in development, and should be implemented in the near future.
I wonder what version of the game you are running ? If it is the 0.4.0.6 so the DX9 version .. well no wonder it wasnt implemented back then
you realise there at multiple adjustable parameters to a suspension system, toe is just one of them. You will need adjustable coil overs to get most options though.