I decided to put the tire back on Friday evening, and then rode my longest ride ever with it on Saturday, 45 miles. And then another 15+ commuting to work this morning. So far so good. I used Sheldon Brown's method of "folding" up a wire-bead tire on the tire I took off (on of my bike's original tires with less than 1500 miles on it) and strapped it on the rack as a spare on my long ride Saturday, just in case. I think I'll be fine without it.