Repair guides › Wheels & Tires
Top up tubeless sealant
Tire sealed to the rim with tape and liquid sealant, no tube. Sealant plugs small holes. Lower pressure without pinch flats. Needs tubeless-ready rims and tires.
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Tools
- Floor pump with gauge: Topeak JoeBlow Sport III ($$)
- Valve core tool: Muc-Off Valve Core Remover ($)
- Tubeless tape, valves + sealant: Stan's NoTubes tubeless kit ($$)
Compare Good, Better and Best for each tool
Steps
- Turn the wheel so the valve is at 4 or 8 o'clock (sealant pools at the bottom).
- Let the air out and remove the valve core with the core tool.
- Inject 30–60 ml of fresh sealant through the valve (60–90 ml for MTB tires).
- Refit the core, inflate, and spin the wheel to spread it.
- Sealant dries out every 3–6 months; in hot weather check sooner.
Diagram
Sliced across, like cutting through the tireTire, tape and valve
Signs it needs doing
- Slow leaks
- Dried sealant