>> Stick to the main streets. Most of Chicago's main streets are good for winter riding even after a big snow because the city keeps them plowed for drivers. Resist the temptation to move to the sidewalks, which often are snowier and icier on bad days. "Do not move to the sidewalks," Rafael Suarez said. "You think it will be better, but it will just be worse."
>> Pay attention to your tires. Some riders recommend thicker, knobby tires to defeat the snow, and others prefer thinner tires to cut through the slush-- figure out what you're most comfortable with, and then ride accordingly. Suarez advises paying attention to the air pressure in your tires--if you can fill them up outside, you won't lose air pressure when you move your bike outside from your warm apartment.