How is it that the rear tire has an outer contour? Is it normal?

The tire is not perpendicular to the ground, it must be tilted. The camber of the tire shows negative camber. The function is that when steering, centrifugal force increases the camber angle of the outer wheel and increases tire wear. Lateral stability becomes worse and understeer increases, so negative camber increases lateral stability and reduces tire wear. And the four-wheel positioning data is normal, so it doesn't matter, it's normal.