Tubeless Tire Repair

Discussion in 'Technical & Maintenance' started by fortech, Dec 13, 2017.

  1. fortech

    fortech Active Member

    My front Mitas E07 tire has a slow leak somewhere. The tire was installed new in June - I estimate 40% tread life remains. If you properly inflate the tire to ~ 30 psi, it takes maybe 7 days to deflate to a point where the rim is sitting on the garage floor. I inflated to 40 psi and tried to find the leak with soapy water but no luck while the tire was on the bike. It's on my "To Do" list to remove the front tire/rim and perform a more thourough inspection when I find the time. I have to take a closer look at the valve stem also to see if it is the culprit.

    What is everyone's take on repairs to motorcycle tires? I would have no issue with an internal repair of such a small leak if I could find somebody to perform the repair. I don't know if I would trust myself to perform...

  2. Wayne

    Wayne Well-Known Member

    Last spring my tkc80 had a slow leak and went flat over the winter. Actually with the soap test, I found two leaks. I still used the tire until July, and just topped up the air every few rides. My TPMS came in handy
  3. HerrDeacon

    HerrDeacon Active Member

    If you find the hole and its repairable, this method that Ari shows in the video below is the way to go. Not much good for quick flat repairs on the road but good if you have the time to take the tire off the rim.

  4. fortech

    fortech Active Member

    That's the method I had in mind. anyone know where I could find a few of those plug/patches? it really doesn't look too difficult
  5. murph

    murph Well-Known Member

    I have used string plugs to get me home and have even ran off a few thousand with them. Tried the plug/patch thing and it did not work for me on a tubeless. Too much flex maybe??? The last flat on the tubeless I had it sealed with plug/patch professionally and will have no issue using it in the tubed Tiger setup.
  6. HerrDeacon

    HerrDeacon Active Member

    You can get them FortNine but you may be able to get them locally.
  7. Wayne

    Wayne Well-Known Member

    Working in automotive garages I have used plugs many times in automotive tires and on my own personal vehicles, and they do work well. Seems like Murph has had luck using them on motorcycle tires as well.

    And I can see how that patch might not be as good. For an emergency repair, I’d recommend the string plug over the patch style plug. And for a more permanent repair I’d bring it to a tire shop and have the area vulcanized.

    NOTE: I don't think I've ever heard of a plug being forced out.
    Last edited: Dec 14, 2017
  8. Bob

    Bob Active Member

    Old thread but don't see how fortech made out...???
    Assuming this is tubeless?? If you can't find a leak with warm soapy water I'd break it down, clean the bead and the rim with white gas or some suitable solvent, REPLACE THE VALVE AND VALVE STEM WHENEVER YOU INSTALL A NEW TIRE, and give the bead a good coat of Camel or similar tire glue before you blow it back up.
    If the rim is not dented and the tire bead is not stretched/broke, you may have to remove the wheel and submerge the tire at full pressure +++ maybe 60 PSI, to look for bubbles from a screw, nail or some other real slow leaking object. Full submersion will reveal any cracked rim or spoke issues as well.
  9. fortech

    fortech Active Member

    Turns out it was leaking around the rim, which I hear isn’t uncommon for a Mitas tire.

    I removed the rim and broke the bead, cleaned it up, added some bead sealer and reinstalled.

    Fine thus far
  10. skibum69

    skibum69 Active Member

    nice thing about tubes...

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