Could someone please explain to me how tire sizing works? For example, Lola has 700x38 tires. I know a little bit of how it works, but I would just like a more detailed explantion.

Rims? Tubes? Tires?

Also, does anyone have any thoughts on winterizing my tires for commuting without buying snow tires? I am just not sure I can stretch my budget for snow tires, but I'll have to wait & see how things go.

I've heard that you can use zip ties? I've also been told that you can use one snow tire on the front and/or back? What is best? Thoughts?

Thanks for all of the help!

p.s. I live in Michigan, so in the winter we get it all - dry conditions, snow/ice, rain etc.