Toe-inToe-in at the rear make's your car more sticky at the back and easier to drive This may stabilize your car. But be careful, this is a very sensitive adjustment. Toe-outRear Toe-out makes the rear of your car very instable. This adjustment is never used. Neutral-ToeFor a neutral feeling adjust less toe-in. The car will be slightly faster and more efficient. But the car may stick less in the back and that could cause slower laptimes.