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how often do you pump yours tires?

  • This topic has 18 replies, 18 voices, and was last updated 14 years ago by PJ McNally.
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  • May 26, 2012 at 5:58 pm #15920
    dave95

    how often do you pump yours tires?

    I seem to have lost 12 psi out of 100 in two weeks.. so 12%

    This is after about 10 rides

    I don’t think theres anything wrong with the tubes, unless the valve screw cap (presta) isn’t sealing well enough

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  • May 26, 2012 at 7:23 pm #682129
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    cat1commuter

    The narrower the tyres, the
    The narrower the tyres, the smaller the volume and higher the pressure, the more often they need to be re-inflated. 12 psi from 120 in two weeks is a lower rate of loss than I’d expect, so you are doing well. I pump up 90 / 100 psi 25 mm tyres once a week. 26 x 1.6 ” tyres on my winter commuter at 80 psi only need pumping up every fortnight, at most.

    The loss of air is through the fabric of the tube. There’s nothing you can do about it.

    May 26, 2012 at 6:53 pm #682127
    0
    Simon E

    Some tubes lose more than
    Some tubes lose more than others but 12 psi over a fortnight isn’t so bad. If it was overnight I’d be more concerned (excepting latex tubes, which are considerably less airtight than normal butyl ones).

    The cap is only keeping dust and crud out and the threaded locknut prevents it opening accidentally, I believe it’s the pressure of the air inside that keeps it closed.

    May 26, 2012 at 6:52 pm #682125
    0
    steady rider

    twice a week sometimes 3
    twice a week sometimes 3 times.

    TT bike tyres deflate every 3 days so i just put them back up to X PSI.

    đŸ™‚

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