At increasing speeds, the effect that lowers the flexing resistance is superimposed by an opposite effect: the deflection of the tyre rolling under load in the contact patch causes the tyre circumference to vibrate beyond the contact patch as a result of forces of inertia that increase with speed. The damping of this vibration produces heat which results in an increased flexing resistance.
This process of formation of a so-called deformation wave behind the tyre contact patch predominates the effect of the decreasing damping in its influence on the characteristic of flexing resistance depending on speed. Based on tyre design, the flexing resistance indicates a linear increase with a low gradient, up to a speed of approx. 35 m/s beyond which the characteristic becomes progressive.
In order to emphasize its significance, we can already say that the flexing resistance is normally the most significant component of the wheel resistance.