What happens when the front wheels lock up?

1 Answers
OZoe
07/29/25 7:45pm
During vehicle movement, if the front wheels lock up and skid first, the vehicle will lose steering capability. If the rear wheels lock up and skid first, the vehicle may experience sideslip with even a slight lateral force. If both front and rear wheels lock up simultaneously, the vehicle will slide in a straight line. During driving, it is required that the front wheels lock up earlier than the rear wheels to prevent the vehicle from fishtailing. Below are detailed explanations: 1. Explanation one: Wheel lock-up occurs when the brake (including disc and drum types) clamps the tire tightly, causing no relative movement between the tire and the brake, resulting in the tire sliding relative to the ground. 2. Explanation two: In vehicles without ABS, if the brake pedal is pressed hard while driving, the wheel speed will rapidly decrease. When the braking force exceeds the friction between the wheel and the ground, the wheel will lock up. A fully locked wheel reduces the friction between the tire and the ground.
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