Set your car up in Time trial, do 50-100 laps on your setup, get the best time you can, then use that setup in races, at the start of a race with fuel sim and tyre wear, it may feel difficult to handle, but the car will dramatically improve in lap times as the race goes on.
If you want a tip, use Viktor Andersons setups, he has a setup for every track in the dry, i saved all my tracks with his setup as they totally suit my driving style, PC setups work exactly the same on xbox or ps3