Blossary – understeer/oversteer

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understeer/oversteer

Under steer is a condition that occurs when a vehicle turns at a smaller angle than the steering wheel input because of front tire slippage. When this occurs, the steering wheel must be turned at a greater angle to achieve the desired turn. Under steer will be affected by the amount of wheel turn lock-to-lock as well as the vehicle's weight and the speed of the vehicle when encountering turns

Over steer occurs when the vehicle turns more than steering wheel input and is indicated by rear tire slippage. It can make the vehicle hard to control. Because of this, engineers often design suspensions that tend toward under steer as a safety measure.