Tyre losing air

[chiz]

Hi     Anyone have an idea on this? My new tyre is going flat after 10 miles at highway speed. Yet same tyre will remain properly inflated for weeks not being ridden. Also does not go flat if bike is just ridden around town and leisurely rides any ideas?
    Chiz

[Troyskie]

Sounds like a valve issue.

[red]

Sounds like a valve issue.

Chiz,

Sound likely.  Brush or spray soapy water on and around the valve, maybe flex it in the hole a bit.  Dishwashing liquids like Dawn makes good soapy water. Otherwise, check the tire for a nail or staple somewhere, maybe with more soapy water if you do not see a problem.

[balky1]

Spray some around the bead also.

[Sparky84]

Sounds like a valve issue.

Chiz,

Sound likely.  Brush or spray soapy water on and around the valve, maybe flex it in the hole a bit.  Dishwashing liquids like Dawn makes good soapy water. Otherwise, check the tire for a nail or staple somewhere, maybe with more soapy water if you do not see a problem.

Yep, mine bubbles up when you push the valve, needs tightening

[ribbert]

Hi     Anyone have an idea on this? My new tyre is going flat after 10 miles at highway speed. Yet same tyre will remain properly inflated for weeks not being ridden. Also does not go flat if bike is just ridden around town and leisurely rides any ideas?
    Chiz

Well, tyre temperature, pressure and centrifugal force all increase with speed, take your pick.

I always get my valve stems changed with the tyres, which at the time was a couple of times a year, the picture below was taken two days after new tyres were fitted. It let go on the highway 2000kms from home late on a Friday afternoon miles from the nearest town.



It would hold air going slow but would deflect with centrifugal force (presumably) if I went too fast and deflate quickly. While unrelated to the valve issue, I notice when the tyre came off there was a build up of rubber around the bead seat that was much older than the current tyre, this often leads to recently fitted tyres not sealing properly.

The one time I recall experiencing your exact problem, it turned out to be a puncture that for some reason behaved in that odd way.

Noel

[Troyskie]

Like Balky said, do the bead also.

I just remembered, on the last rally one of the bikes had this exact issue after plugging a puncture.

The puncture was slightly elongated and the plug would seal for low speed, but was no good after a few bumps or higher speed and a mushroom shaped special rubber plug fixed it.

So, three checks, valve, bead, or puncture.

[Pat Conlon]

Like Balky said, do the bead also.

I just remembered, on the last rally one of the bikes had this exact issue after plugging a puncture.

The puncture was slightly elongated and the plug would seal for low speed, but was no good after a few bumps or higher speed and a mushroom shaped special rubber plug fixed it.

For a puncture at an angle, unfortunately, the rope plugs are all that will work, considered to be a (very) temporary low speed fix until you can patch the tire from the inside....however, if it's a straight in puncture, you're better off because those mushroom plugs are the best. Put the plug in via special tool, pull on the stem until the cap seats against the inside wall of the tire....and Bob's your uncle.
I love my Stop and Go tire plug kit. I go nowhere without it.

[ribbert]

img width=612 height=612]https://i5.walmartimages.com/asr/6cf0effd-4d4d-403b-ba12-cd9c49ae0c75_1.635746ed339c53192ff21daa40b4fd0d.jpeg?odnWidth=612&odnHeight=612&odnBg=ffffff[/img]

Have you had occasion to use it?

[Pat Conlon]

Several times, it works a treat.
  I need (3) of the 16oz co2 cartridges to fill my front tire and (5) for my back tire.....(wear gloves)

[ribbert]

Several times, it works a treat.
  I need (3) of the 16oz co2 cartridges to fill my front tire and (5) for my back tire.....(wear gloves)

Do you carry a compressor?

[Pat Conlon]

Not yet...I'm considering getting one.

Many years ago I had a problem running an air compressor to fill a tire and it ran down my battery.
The co2 cartridges have worked well so far.. here's a post from 2011 where I had multiple punctures at once.

Hey Dan, no, I have not had a bad experience with the Stop and Go 'schrooms. I used them only once, but I used 5 of them.
Exiting the freeway at night some dip shit contractor spilled a box of lath nails on the off ramp. In my well worn Mich. Pilot Power 2CT's I picked up 2 nails in my front tire and 3 in my rear tire. The nails were everywhere, I could not avoid them.
Stopping at a well lit strip mall parking lot I pulled the nails and reamed the holes with the rotary file and put the plugs in. I remember with the small holes, I had to work the insertion nozzle back and forth into the tire to get the proper depth so the caps inserted correctly.... I filled the tires with the 16oz CO2 cartridges, 3 front 4 rear. Trimmed off the plug tails and then cautiously rode 120+ miles home. No leaks. I did throw away the worn tires the next day.

Getting the nozzle tip past the tire tread and into the caucus was the key. Reaming the hole a bunch, made it easier. Some spit helped. I fully expect Klavdy to comment on this post in....3.....2.....
One thing I did notice, the mushroom plugs are soft. If you have a broken wire belt in the tire, or something sharp in the tire carcass, this could cut the soft stem of the 'schroom.

Cheers!

Since this post, I have used my kit 3 other times....all with great results.

[Sparky84]

Like Balky said, do the bead also.

I just remembered, on the last rally one of the bikes had this exact issue after plugging a puncture.

The puncture was slightly elongated and the plug would seal for low speed, but was no good after a few bumps or higher speed and a mushroom shaped special rubber plug fixed it.

For a puncture at an angle, unfortunately, the rope plugs are all that will work, considered to be a (very) temporary low speed fix until you can patch the tire from the inside....however, if it's a straight in puncture, you're better off because those mushroom plugs are the best. Put the plug in via special tool, pull on the stem until the cap seats against the inside wall of the tire....and Bob's your uncle.
I love my Stop and Go tire plug kit. I go nowhere without it.

I agree Pat, it's a great system.

I also bought the larger diameter plugs to go with my kit( just in case) and yes, it's always under the seat.

[Old Rider]

I have the  kit in the pictures below and used it 2 times and it works great .I have never had to replace the tire after it was fixed and used it all its
lifetime afterward .I post a pic of a tire on the fj that punctured when almost new.The nail was down in the threads so i was unsure if i could rely on the
repair,but it lasted the tire lifetime.
found a video of a almost similar kit on YT https://www.youtube.com/watch?v=M5_nK8V-nU0   but it has a different connector to the co2 patron .One thing i don't understand is why he uses 3 patrons to fill the
tire watching the video made me thinking   If i remember right  i used only 1 when i filled my tire and
the pressure in the tire felt high.I used the kit 2 times and i have used 2 of the 3 co2 patrons that comes in the kit ..Maybe the pressuregauge that was used in the video is
wrong or the co2 still to cold to read the actual pressure.
Anyway it is a must to stop at nearest gas station to replace the co2 with air.
On another bike i had problems with a leak in the bead. After replacing the tire it still leaked in the bead .I then used the stuff that comes in aerosolcan
and it fixed the leak. Next time when the tire was worn out and replaced  the same happened so used the fix a flat in aerosol can again and the leak stopped.
I think the reason for the leak in the bead was me not being careful enough when replacing the tire at home and made a scar in the rim

On my car that has puncture free tires i had a puncture!! yes sounds strange ,but it does puncture but the tire does not get flat just a little lower
sidewall and you can drive
with a speed of max 80 kmH to get to a place to patch or replace the tire.Or as the manual says to the Dealer =) I found a little nail that i pulled out and used a can  fix a flat stuff and it worked great that is 3 years ago.

[ribbert]

.... I had problems with a leak in the bead. After replacing the tire it still leaked in the bead .I then used the stuff that comes in aerosolcan
and it fixed the leak. Next time when the tire was worn out and replaced  the same happened so used the fix a flat in aerosol can again and the leak stopped.
I think the reason for the leak in the bead was me not being careful enough when replacing the tire at home and made a scar in the rim...

Rolf, rims often get rubber stuck to them where the bead sits, you need to thoroughly clean it with each tyre change or risk the bead not sealing properly, I use a wire brush in a drill.

I have always used a puncture kit the same as yours but the plugs Pat mentioned look interesting. A bit of research suggests carrying both is a good idea, they don't take up much room. Like you, I have long since stopped treating them as a temporary fix and leave them in there for the life of the tyre.

It's not a bad idea to check the glue and plugs occasionally, they both dry out over time and a fresh card of plugs and tube of glue are cheap.

Noel