CanadianBiker32

Trying to change tires on my fat bike
i have tubeless set up
changing my 4.0 for my 4.7 for winter

anyways tires are like stuck on , wont move

i try all methods even follow this video on youtube
and i even tried to step on tire and nothing moves, i can't seem to move the bead
or turn the tire
i let all air out of tire etc

suggestions of what i can do or even spray on tire to help to get it off.

i just want to be self sufficient and not have to rely on my LBS just to change tires on fat bike thanks

bikesailor

I had the same problem and ended up buying a motorcycle bead breaker at Harbor Freight like this https://www.harborfreight.com/bead-breaker-92961.html

CanadianBiker32

thanks, anyways i got tire off, got the new tire on rim, but challenge now is securing the beads and making tire air tight? i was told to use a tube?
any tips?

xenologer

remove the core from the valve to maximize airflow
use a compressor to blast the tire bead into position
removing air hose at this point should be fine, beads should stay locked
inject your sealant thru the valve, reinstall the valve core
reinflate
use soapy water to test for leaks
do the shaky dance to distribute sealant to any leaky areas


using a tube is a trick for when you don't have a compressor to blast the tire into position
the tube is used to seat the beads
you then carefully unseat one side only, remove the tube
then pray and try to reseat with your hand pump; hopefully just one side is better chances than both at once....

CanadianBiker32

thanks. as i only have a floor pump
i will experiment with the tube

should i install the sealant when tire fully inflated. or at zero psi

wschruba

You would need a truly massive amount of airflow to bead a 4-5" tire on an 80mm rim...essentially a tank dump. Much easier to bead the tire with a tube, break one side, remove the tube, and re-mount it. The bead can be manipulated onto/close to the shelf by hand...but maybe not enough for a floor pump to work.

Lots of kludgey methods...ratchet straps come readily to mind, though.

xenologer

That question is going to answer itself in practice
considering you have to unscrew the valve core to get the sealant in...