Hole in rim of SLR1 wheel rim - leaking!

Discussion in 'Bicycle Mechanics and Repairs' started by Cayenne, 13 Aug 2019.

  1. Cayenne

    Cayenne Active Member

    Bishops Waltham
    This afternoon I fitted a new tyre to the front wheel of my Giant bike. I pumped it to 80 psi and refitted the wheel to the bike while it was still on the bike stand. 15 minutes or so later, I heard a sudden rushing of air from the wheel. The bike was still on the stand so absolutely no weight on the tyre. It turned out that the air was escaping from the little hole, near the valve, in the rim.
    Can anyone tell me what this hole is for?
    Why is it letting all my air out?
    And how can I fix it so I can inflate my tyre?

  2. Cycleops

    Cycleops Guru

    Accra, Ghana
    I'm sure you'll find out the reason when you remove the tyre. Could be the innertube has failed.
    C R likes this.
  3. Ian H

    Ian H I am an ancient randonneur, & I stop often for tea

    East Devon
    Just guessing that you used tyre levers to fit the tyre.
  4. I think this is a tubeless tyre fitted to a tubeless compatible rim.

    Perhaps the reason for air loss through the hole is related to the tubeless rim tape installation?
    Cycleops and Sharky like this.
  5. There’s a little rubber washer that fits between the valve hole and the valve ( on the outside) check it isn’t missing or split. Also check you have sealant in the tyre. I find that Stan’s Race sealant is particularly effective.

  6. fossyant

    fossyant Ride It Like You Stole It!

    South Manchester
    That hole is to let water out.

    You've got a problem with sealing at the rim/tyre valve - actually can see it bubbling round the tubeless valve. Some air will be going into the rim cavity, and coming out of the DRAIN hole.
    Broadside, Ajax Bay, C R and 2 others like this.
  7. raleighnut

    raleighnut Guru

    On 3 Wheels
  8. fossyant

    fossyant Ride It Like You Stole It!

    South Manchester
    PS, remove that sticker like it says to. It won't help valve sealing.
    Broadside likes this.
  9. Justinitus

    Justinitus Someone mention cake??

    It looks to me like that sticker is stopping the valve sealing properly on the rim. I thought the shop was supposed to remove this sticker when installing the valve and sealant.
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