There's the inherent understeer/oversteer that exists with the chassis of whichever car you're driving, but what you really need to watch out for is the snap oversteer when the throttle is applied too quickly and the understeer that can occur due to track surface conditions and layout. When encountering understeer in the chassis, such as is typical with FF and 4WD cars, I tend to brake early but gently, and then apply more pressure late in the apex and immediately prior to exiting the corner before getting back on the throttle. This tends to circumvent the poor corner exits by shifting as much weight as possible to the steered wheels. Cars like the Yellow Bird, BTR, and F40 are actually balanced quite well but have a problem with power oversteer due to the amount of power they pack and the lack of grip provided from their tires when combined with their low weight. Conquering power oversteer is easily accomplished by not getting on the throttle too quickly upon exiting a corner and insteand very gradually increasing throttle pressure while paying close attention to the amount of grip you have.