A car is oversteering when it feels as though the back is going round faster than the front. It is caused by a lack of traction at the rear either through lack of mechanical grip or too much acceleration. A car is understeering when the front doesn’t want to grip the road, and prefers to head to the outside of the corner at a narrower angle than the driver would wish. It is caused by a lack of grip at the front or too much speed through the corner.
We'll see how to set up a F1 car, but first we'll learn some basic craps: understanding oversteer and understeer
When you set up a F1 car you got to pay attention of every circuit characteristics, every particular details of it and last but not least youre driving style.