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Just wondering...
Do you...
-Guess?
-Base it on time elapsed from last filling?
-Wiggle the tyre and see if you can hear it?
-Wait until you are in the middle of nowhere and your tyre doesn't seal?
All help gratefully received etc. etc.
I tend to wait until it doesn't try and rush out the valve when I open it.
the 'does it slosh' test is ok, too.
When I can hear a ball of latex rolling around inside it's usually time to refresh the liquid
What? Tubeless requires extra maintenance?! And I thought the only downsides where the faff of setting up, the extra cost, the extra effort required to swap tyres, and the fact they still puncture.
🙄
No seriously, I didn't know that. It's good to learn from other peoples mistakes.
I suspect maybe you already had a strong opinion a priori...
This forum is too cynical. I'm off out on my bike. If I have any punctures, I'll report back.
(A posteriori experience, perhaps).
[i]I'll report back. [/i]
don't feel obliged.
wwaswas, have you had a bad experience with tubeless maybe?
(pulling on my cycling gear)
after i pulled the four inch nail from my front tyre, it pissed sealant all over the place for ages
two weeks later when i remembered to top up the sealant i discovered that about half of it remained.
but its less faff to pop the bead off than it is with a tube, so i usually check if i have the wheel out anyway.
I changed my tyres on my tubeless set up the other day - I found more than a dozen big thorns stuck in the tyres that I hadn't even noticed as you could only see them from the inside.
That would have been lots of stopping on the trail for tube changes had I not been running them tubeless.
6 monthly here. After that the liquid becomes really slow to seal which means I end up stopping to pump up the tyres, loosing some of the advantages of tubless in thorny country.
I take the wheels off every couple of months or so and shake them.
As long as it sounds like there's plenty of liquid latex inside I put them back on.
I keep meaning to make a note of when each wheel was filled so I can keep track of how long it lasts. Maybe next time I refill one I will. Or maybe I'll forget again.
After a big hole thats' required a load of sealant or when I can't hear it anymore on a 'shake' test.
I just break the bead and whip off a few inches of tyre from the rim and look to see how much sealant settles at the bottom. Then top up as required.
[img] 
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If you've got one of those in your tyre its usually worth topping up (and taking it out).
I only top up when I change tyres. Had the a blue groove on the front for about two years with out a top up. "stans"