What Happens When Rear Wheels Lock Up?

[VonLukas]

When the front wheels lock up, the car can only move straight and cannot turn. When the rear wheels lock up, the car can still turn, but it is prone to drifting. Effect: If the front wheels lock up and skid first during driving, the vehicle will lose steering capability; if the rear wheels lock up and skid first, the car may slide sideways under slight lateral force; if both front and rear wheels lock up simultaneously, the vehicle will skid 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. Brake: Wheel lock-up occurs when the brake (including disc and drum types) clamps the tire, causing no relative movement between the tire and the brake, resulting in the tire skidding relative to the ground.