a roadie bike in snow , 25mm tires are rather Narrow.
You may have to hang up that bike till Spring..
for transportation when there is snow on the ground is there plowed clean Bike Paths?
I get out the Studded tire Bike when the water from the sky Freezes into snow
and the springs running over the street Freeze to Ice.
but those are not made in very narrow tire sizes , a 35 ~ 40 is more the practical width
in a 700c wheel Bike .. Cross bikes and Hybrids ..