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How often do you top off your tire sealant?

Tubeless bike tire sealant can dry up and/or slowly leak over time, so it's important to check your bike tires regularly.
By Jeff Barber
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A close-up image of a hand holding a tire with an dried tire sealant stretched between the tire and the hand. The tire appears worn, and the surface is rough and dark. The adhesive is a yellowish color, contrasting with the tire's black surface. The background shows a blurred workspace with bits of material scattered on a light-colored surface.

Apologies for the disturbing image, but this is serious. Friends don’t let friends ride around with dried up tubeless tire sealant!

It always seems like I just topped off the sealant in my mountain bike tires, but the reality is I generally go months without touching them… which is a problem when I finally do get a puncture. Or maybe I’m getting punctures all along, and I only notice once the sealant is dried out and isn’t working anymore…

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How often do you top off the sealant in your mountain bike tires?

How do you remember and/or check your tires to see if it’s time to top off? Tell us in the comments below, and share which sealants you’ve found last the longest between refreshes.

And be sure to check out our tubeless tire sealant roundup, which includes long-term testing data.

 
Tire Sealants
We Tested 5 Tubeless Tire Sealants to See Which Ones Work Best
Tire Sealants
How Tubeless Tires Work, with Stans President Mike Bush [Podcast #264]
Mountain Bikes and Gear
How to Get Leaky Tubeless Bike Tires to Seal Again
Tools
I tested 10 tubeless tire plugs and tools, and one stands out as my favorite.