Originally Posted by
big john
Over the last several years I have helped people put tires on many different tubeless rims. I only mentioned the mtb because it's amusing. It seems to me that mounting on tubeless ready rims is always a struggle but since I always use tubes I don't have information on mounting them tubeless.
Most of the tubeless rims I recall don't have a low valley in the center, it's flat between the sides after the dropoff from the bead. Since you have experience mounting tires on the same rim with and without tubes I thought you could explain why the tube makes a difference.
Maybe to help visualize, a profile diagram of a typical tubeless rim helps?
If I understand what's being said... After removing one bead from the rim, the opposite bead has to be brought into the deepest part of the center channel. With a tube, that tube somehow then has to fit between the bead that's sitting in the channel, but be out of the way, so you can fit the other bead back into the rim? Is this how it goes?
