What does four-wheel alignment mean for a car?

[AngeloRose]

Four-wheel alignment for a car is based on the four-wheel parameters of the vehicle. Through adjustments, it ensures good driving performance and certain reliability, maintains stable straight-line driving and light steering, and reduces wear on tires and steering components during driving. Four-wheel alignment is a maintenance method. It is necessary to perform four-wheel alignment when replacing new tires, after repairs, when there is unilateral wear on both front and rear wheels, when the car drifts during straight-line driving, when the steering wheel is not aligned, when steering feels heavy, or when the steering wheel cannot automatically return to center. All cars have four-wheel alignment data; the wheels are not simply perpendicular to the ground. The front wheels have toe-in and camber angles, and the rear wheels also have camber angles. When driving over speed bumps and rough roads, the four-wheel alignment data of the car may change, so it is important to perform four-wheel alignment regularly.