Can a tube tire have a slow leak?

[Gliderjohn]

When checking out my T-3 this morning (Hadn't been ridden in about three weeks) my front tire had dropped 6 pounds which is about twice or a bit more than usual after that amount of time. Past experience with tube tires is either normal or a very quick deflation, not a slow leak like a tubeless might do.
GliderJohn

[gearman]

Did the weather change?

[Ncdan]

Absolutely, a pin hole can develop from a grain of sand or just from a defect in the rubber or just natural wear. I would take it out and replace the tube with a new one, never patch unless in an emergency then replace ASAP. Maybe check the valve core for a leak first. You can also check for a tube hole by using soapy water at the base of the valve stem and bend the stem back and foreword. Just a humble opinion based on experience.

[LowRyter]

valve stem

[Gliderjohn]

from Gearman:

Did the weather change?

No, not significantly temp wise. During the same period my rear tire loss less than a pound. I use a dial type Accugauge.
GliderJohn

[fotoguzzi]

I'd swap out the valve core and see if that fixes it before any tube work.

[bigbikerrick]

Anytime I have had a slow leak in a tube tire, its always been the valve core. Any puncture type leak i have had has always resulted in a flat tire overnight. Thats one of the reasons I have converted my Eldorado, and Aluminum to tubeless, years ago.
Rick.

[MMRanch]

gliderjohn

 

Not if you use "Ride On" or tire sealer of some sort ! 

[Kiwi_Roy]

Any time I pick up a nail or screw in a tubed tire they seem to go down fast and are hard to fix, that's why I convert all my guzzis to tubeless, spoke wheels included.

[John A]

A grain of sand between the tube and tire can do that . It'll seal sometimes and sometimes not. Hopefully it's just a valve core otherwise a new tube is in your near future, weather it's at home or on the side of the road is up to you

[davedel44]

Check valve 1st.

Dave
Galveston

[jumpmaster]

Tubes made with natural rubber (if they are even still made), will lose air over time, although it usually is (was?) much slower than your experience.  I'd go with the bad valve stem, as noted by others, as the likely culprit.  Oh, also just check that the little "pushy-thingy" thing inside the valve stem is tightly screwed in - very occasionally one of them will start to loosen up and start seeping air.  Back in my wild days, a couple of times I unscrewed one of them, at different times, on wheels of cars that were especially ignorantly parked and blocked access for others, etc.  Caused great inconvenience to the offender without actually causing physical damage.

[Scott of the Sahara]

The tubed tires on my Ural leak down about 1 pound a day (they all do that). The other Ural I had did the same thing. Other Tubed bikes I have owned did not. I put some slime in the tubes to see if that stops the problem.

[Two Checks]

Think back to when you were a kid. Seems like everyone got a sow leaker now and then.

[Gliderjohn]

Thanks for everyones advice. Will check the stem.
GliderJohn