Originally Posted by
ianjk
You can patch a tire without taking the wheel off the bike, little bit of a PITA, but possible.
Well, you can 'patch' a tube, but not replace one.
Personally, I always just replace it when I get the flat, it's faster. I carry a patch kit for the extreme instances when I get two flats in one ride, but that hardly ever happens, and if it did, I might just use the $1.50 I keep in my bag for the bus.