With these tires a cheap product from the market leader was replaced, which was installed as original equipment of an otherwise good and thoughtful bike (also the Bird brand can be bad if the OEM customer will save compulsory to maintain a certain price limit on complete bike). I drove it all winter on some scattered with gravel paths and roads without having previously usual one or two winter periods. However, the rolling resistance of these tires is significantly dependent on the temperature; in freezing temperatures they roll harder and harder the wheel is steerable (one has the impression at the front too low air pressure, which is not true when measuring). Always inflate as hard as possible (approximately 4 bar at 28x1,75).
