Originally Posted by
sreten
...Rolling resistances at low speeds into the wind will
be much less than with higher speeds with the wind....
I can be wrong, but rolling resistance depends on the elasticity of the tire(s) and the road, dismissing the road's elasticity for the moment the tire's elasticity will remain constant at any speed. The road's elasticity can change, for example when traversing a patch of loam from and to an asphalt surface.
Brad