#tfw it's after Memorial Day and 80° outside and you suddenly realize you haven't taken the snow tires off the minivan yet.
I guess I know what I'm spending the next hour and a half doing!
After years of practice I really can do it in an hour and a half:
Put tires on rims from under porch into minivan.
Put jack and big socket wrench from basement into minivan.
Drive to parking lot.
Get tire iron out of spare.
Loosen all lugnuts.
For each tire: position jack, jack up, remove lugnuts, remove old tire, put on new tire, put on lugnuts, lower jack.
Tighten all lugnuts.
Put away tire iron.
Put old tires in minivan.
Drive home.
Put tires under porch.
Put jack and wrench away.