When looking at the wheel from the front and rear direction, the tire is not installed vertically, but slightly inclined in a figure of eight, which is called negative camber of the front wheel, and positive camber of the front wheel when opened in the opposite direction.
The purpose of front wheel camber is that due to the clearance of bearings, the front wheel camber may be formed after the wheel is loaded. If the front wheel inclines consciously, it can prevent the front wheel from inclining inward when the vehicle is overloaded, and increase the load of the wheel outer bearing and lock nut, which is beneficial to driving safety. In addition, the combination of front wheel camber and kingpin camber can reduce kingpin deflection and make steering light. The camber angle of the front wheel generally does not exceed 100. However, because modern cars use low-pressure wide radial tires, the contact area of tires is widened, and the camber angle of front wheels will cause uneven wear inside and outside the tires and increase rolling resistance. Therefore, the camber of the front wheel is set to be very small, and some even set to a negative value (that is, it becomes the camber of the front wheel).