Sounds like the tire might have been improperly mounted, though that's hard to tell without seeing it. It could be that the tire itself is defective, though that doesn't happen often. Additionally, check to make sure your brake pads are properly adjusted and do not ride on the tire, that might account for the cord showing near the bead. Lastly, check to make sure the rim strip that covers the nipple holes inside the rim is properly mounted.
It's hard to diagnose this without seeing anything, though...
Last edited by Eurastus; 05-31-04 at 09:12 PM.