That's how it works in BeamNG.Drive. The wheel load is calculated in the entire wheel, not in slices.
hm.. thnx for explanation --- Post updated --- maybe you can present some image like lfs? --- Post updated --- how curent tyre model work
Press CTRL+B (You may need 'Advanced Features' enabled in Options > User Interface IIRC), and you will see how the vehicle is simulated. In short, we have the 'orange' part: