Good call Danielle.
Same thing happened to me a long time ago, on a hybrid with something like 700x35s. I think I may have had a fold in the tube causing the bulge; Jessica seems like too much of an expert to make a mistake like that though.
Danielle said:Sounds like your tire was over inflated, your rim is damaged, or the tire wasn't seated properly. Just a guess though!
Jessica said:I ride 700 by 32. Had one problem...that was a straight up blow out. Heard the tire unseat, the tube rubbed on the brakes twice...I had enough time to get a 'Son of a bitch..' out before the shot was heard to the world. I have NO idea what caused that...I was riding home from work...