The seating method varies according to whether you have hook edge or Endrich rims.

With Endrick rims the bead can be low in the center well, and you need to pull it up. Sometimes simply over-inflating will blow it out onto the seat with a solid pop sound. This is how auto and motorcycle tires are seated. This only works if it's close to begin with, otherwise you have to work the tire around to get it as close as possible then try more air.

Or you can pull it up with a pair of pump pliers (Channellok). If using pliers, protect the tire with a piece of leather (an old belt is fine). Put the short jaw against the rim and rock back to lever the opposite side out.

Lastly you can ride them a few days, then lower the pressure and try reseating after the tire has relaxed a bit.


Hook edge rims usually have the opposite issue where the tire is out too far and the bead not pocketed under the hook correctly. If inflated to full pressure, there's a good chance they'll blow off.