i switch bikes.

i used to play the tire/wheel set swap game back in the early days of my bike commuting, but i got bored with that tedious game real fast.

having two bikes ready to go, one with studs/one without, allows me to quickly hop on whichever bike is appropriate for the conditions of any given winter morning and just go! with two little ones that have to get fed and dressed and dropped off at daycare every morning, i often don't have a literal second to spare as i race to get to work on time. tire/wheel set swaps would just be one more time penalty nuisance that i'm glad i no longer have to deal with.