I usually use throttle+steering to throw the rear end out on easy/medium corners off straights, other than that I'll use a feint motion and throw the car sideways going into the corner and use the throttle to keep it sideways. for really sharp and hair pin corners, I'll throw the entire care sideways and use the brakes and opposite lock to keep the car sliding sideways with as little forward movement as possible and then just as the car enters the turn use the throttle to start pushing it forward and keep it sideways around the corner if its a hairpin. Make any sense? lol.