There are no stupid questions, just a lot of inquisitive idiots.
I've an 18 year old Bianchi Boardwalk. Back before it became a basement bike, my LBS built me a rear wheel with a Mavic Module 3D 36 sp rim and 700x41 tire. The front wheel is stock, 700x35. Do I need to carry two spare tubes, or will the 700x35 work in a 700x41 at least long enough to get me home?
Inquiring minds want to know.