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Tubeless Newbie Just Discovered New Pinhole Leak

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Tubeless Newbie Just Discovered New Pinhole Leak

Old 03-07-18, 12:41 AM
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michaelm101
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Tubeless Newbie Just Discovered New Pinhole Leak

Indeed, these tubeless tires (that came on the bike) have some minor "oozy" spots, but managed to hold air adequately for months while sitting in the garage.

I haven't ridden this bike much, but after riding yesterday, I woke this morning and discovered the rear tire being flat. Long story short, I discovered a small, pinhole sized leak blowing bubbles in the tread at the base of one of the knobs.

Can I simply set the leak at 6:00, run some sealant in the valve and pedal the tire (or ride) around (like using fix-a-flat on a car tire)?

If so, do I need to use the same stuff that's already inside (don't know what it is, but it's dark yellowish)?

Thanks for your help!
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Old 03-07-18, 11:07 AM
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Bike tubeless tire repair kit.

https://www.rei.com/product/127938/g...EaArIfEALw_wcB
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Old 03-07-18, 11:24 AM
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I would try some fresh sealant (doesn't matter if it is the same brand) before doing anything drastic.
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Old 03-07-18, 11:59 AM
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Got my first tubeless bike three weeks ago, no punctures yet, so I'm definitely a tubeless newbie also.

My tires have Stan's sealant in them. Their instructions say more sealant should be added every 2-6 months, so if you haven't done this for a while you should probably try it first.

Any real world suggestions on how frequently to add sealant and how often? 2-6 months is a pretty wide range.
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Old 03-07-18, 03:45 PM
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Originally Posted by wgscott View Post
I would try some fresh sealant (doesn't matter if it is the same brand) before doing anything drastic.

THX! 1) How much sealant? 2) Is the Stan's injector mandatory?
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Old 03-07-18, 09:26 PM
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I did this for the first time 3 days ago, so I am hardly an expert. We used orange sealant, which is supposed to be better than Stan's, and a 60ml syringe with a piece of tubing that you put on the valve stem shell after you extract the valve stem. We used about 100ml per tire.
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Old 03-07-18, 10:05 PM
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The Stan's Injector is... fair, at best. The one that TruckerCo bundles with their sealant is excellent.

Any time you have a slow leak/bubbler, just squirt in a little more sealant.

As to frequency of refreshing sealant, there are just too many variables to throw down an estimate. In the winter (what we have of it) I can go as long as three months on one fill of sealant. In the scorch of the SoCal summer, I've had sealant go completely dry in 3 weeks. Also take into consideration that I wear through a rear tire in 4-6 months, depending on the bike and the tire. In 2017, I went through 1.5 quarts of sealant.
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Old 03-08-18, 09:58 AM
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Switch Sealants

If you replace your sealant with Finish Line's, you don't have to replace it because it will not dry out.
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Old 03-08-18, 10:16 AM
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...and as soon as it is actually released, someone can test it and see how it works. Because if it doesn't dry out, how will it seal punctures? I mean, I desperately want it to work-- it's competitively priced, and should be readily available on Amazon, etc. But the best performing (that is: seal punctures quickly) sealants seem to be the ones that dry out more quickly.
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Old 03-11-18, 07:27 PM
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Finish Line Sealant

It has been released and I have had it in my tubeless tires for 156 miles. The company that Manufactured it for Finish Line is called Magic Seal. They have been making sealant for motor cycle tires, car tires, tractor tires, and big jet airline tires for some time. There are youtube videos of the bicycle tire formula on a mtb tire that had several nails put into it and all sealed just fine.
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Old 03-11-18, 08:10 PM
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Originally Posted by michaelm101 View Post
Indeed, these tubeless tires (that came on the bike) have some minor "oozy" spots, but managed to hold air adequately for months while sitting in the garage.

I haven't ridden this bike much, but after riding yesterday, I woke this morning and discovered the rear tire being flat. Long story short, I discovered a small, pinhole sized leak blowing bubbles in the tread at the base of one of the knobs.

Can I simply set the leak at 6:00, run some sealant in the valve and pedal the tire (or ride) around (like using fix-a-flat on a car tire)?

If so, do I need to use the same stuff that's already inside (don't know what it is, but it's dark yellowish)?

Thanks for your help!
When you first put sealant in, slosh the sealant around the set the tire on it's side over a wastebasket, wait an hour, slosh and flip. That helps seal those oozy spots around the beads.

In general, small holes will seal just by setting a 6 o'clock. If you have problems with them re-opening there's a variety of patch options.
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Old 03-11-18, 08:25 PM
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Originally Posted by Lars Halstrom View Post
It has been released and I have had it in my tubeless tires for 156 miles. The company that Manufactured it for Finish Line is called Magic Seal. They have been making sealant for motor cycle tires, car tires, tractor tires, and big jet airline tires for some time. There are youtube videos of the bicycle tire formula on a mtb tire that had several nails put into it and all sealed just fine.
That's good for you and all, but I haven't found a single place selling it online or off, and I have 341 miles so far in the month of March, so I don't think 156 miles amounts to much of a test. The stuff was only announced about 3 weeks ago, so I'm really not surprised it isn't readily available.
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Old 03-11-18, 08:48 PM
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Finish Line Sealant

Try this site. https://www.universalcycles.com/sear...e+tire+sealant

Anything else? Do I need to find the YouTube link for you?
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Old 03-11-18, 08:51 PM
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Originally Posted by Lars Halstrom View Post
Try this site. https://www.universalcycles.com/sear...e+tire+sealant

Anything else? Do I need to find the YouTube link for you?


I'll help you instead-- let me know where to send the step-ladder, so you can get over yourself. Reading is fundamental.
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Old 03-11-18, 10:32 PM
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I bought a quart & a 2 oz bottle of Stans
I use the 2oz bottle to put it in the tire.
Plan to start carrying a 2 oz bottle & tubeless
repair kit instead of tubes & patch kit
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Old 03-18-18, 07:32 AM
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I'm pretty interested in the Finish Line Sealant, too...But it seems like it will be at least a few months before anyone can start evaluating their claim that it never dries out.
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