Tubeless Maintenance

Keeping your tubeless setup reliable and performing

What is Tubeless Maintenance?

Tubeless tires eliminate the inner tube, using sealant to seal the tire directly to the rim and automatically plug small punctures. While tubeless setups are incredibly reliable, they require regular maintenance to keep performing optimally. The sealant dries out over time, and tires can develop leaks or lose air pressure. Proper maintenance ensures you get the full benefits of tubeless: fewer flats, lower tire pressure for better traction, and a smoother ride.

Why Tubeless Maintenance Matters

Proper Maintenance Gives You

  • Reliable puncture protection
  • Consistent air retention
  • Ability to run lower pressures safely
  • Confidence on the trail

Neglecting Maintenance Causes

  • Frequent air loss and flats
  • Dried-out sealant that doesn't work
  • Sealant buildup ("boogers") inside tire
  • Unexpected trail-side failures

Sealant Refresh Schedule

How Often Should You Refresh Sealant?

Sealant dries out over time, losing its ability to seal punctures. The refresh interval depends on climate, riding frequency, and sealant type.

ClimateRefresh IntervalNotes
Hot & Dry2-3 monthsSealant dries faster in heat
Moderate3-4 monthsStandard refresh schedule
Cool & Humid4-6 monthsSealant lasts longer
Race DayFresh sealantAlways use fresh for races

💡 Check Your Sealant

Shake your wheel side-to-side. If you hear liquid sloshing, the sealant is still good. If you hear chunks or nothing at all, it's time to refresh. You can also remove the valve core and check the sealant's consistency.

How to Add Sealant

1Gather Your Tools

  • Tubeless sealant (60-120ml per tire)
  • Valve core remover tool
  • Sealant injector or bottle with nozzle
  • Floor pump or compressor
  • Rag or paper towels

2Remove the Valve Core

The easiest method for adding sealant:

  • Deflate the tire completely
  • Use a valve core remover to unscrew the valve core
  • Position the valve at 3 or 9 o'clock (horizontal)
  • Set the valve core aside in a clean place

3Inject the Sealant

Add the correct amount of sealant:

  • 29" tire: 90-120ml (3-4 oz)
  • 27.5" tire: 75-90ml (2.5-3 oz)
  • 26" tire: 60-75ml (2-2.5 oz)
  • Use more for wider tires or aggressive riding
  • Insert the injector nozzle into the valve stem and inject slowly

4Reinstall Valve Core and Inflate

  • Screw the valve core back in firmly (but don't overtighten)
  • Inflate to your desired pressure
  • If the tire won't seat, you may need a compressor or CO2 for the initial burst
  • Wipe away any sealant that leaked from the valve

5Distribute the Sealant

Coat the entire inner surface of the tire:

  • Rotate the wheel slowly, tilting it side to side
  • Shake the wheel up and down to coat the tread area
  • Ensure sealant reaches the bead area (tire-rim interface)
  • Let the wheel sit for 5-10 minutes, rotating occasionally

6Check for Leaks

  • Inspect the tire for any air leaks or sealant weeping
  • Small leaks should seal themselves within minutes
  • Spin the wheel and rotate to help sealant find leaks
  • Check pressure after 24 hours—some air loss is normal initially

Tire Pressure Guidelines

One of the main benefits of tubeless is the ability to run lower pressures for better traction without risking pinch flats. Here are starting points based on rider weight and terrain:

Rider WeightFront TireRear Tire
50-65 kg (110-145 lbs)18-22 PSI (1.2-1.5 bar)20-24 PSI (1.4-1.7 bar)
65-80 kg (145-175 lbs)20-24 PSI (1.4-1.7 bar)22-26 PSI (1.5-1.8 bar)
80-95 kg (175-210 lbs)22-26 PSI (1.5-1.8 bar)24-28 PSI (1.7-1.9 bar)
95+ kg (210+ lbs)24-28 PSI (1.7-1.9 bar)26-30 PSI (1.8-2.1 bar)

🏔️ Adjust for Terrain

  • Rocky/technical: +2-3 PSI to prevent rim strikes
  • Loose/sandy: -2-3 PSI for better traction
  • Wet/muddy: -2-3 PSI for grip

⚖️ Front vs Rear

  • Front tire: 2-4 PSI lower for steering grip
  • Rear tire: Higher pressure for support and efficiency
  • Aggressive descending: Increase front pressure slightly

Troubleshooting Common Issues

Tire Losing Air Quickly

Possible causes and solutions:

  • Dried sealant: Refresh with fresh sealant
  • Large puncture: Sealant can only seal holes up to ~6mm; use a plug or tube
  • Bead not seated: Deflate, reseat the tire, and re-inflate
  • Valve leak: Tighten valve core or replace valve stem
  • Rim tape issue: Check for gaps or damage in tubeless tape

Tire Won't Seat or Keeps Burping

Possible causes and solutions:

  • Not enough air volume: Use a compressor, CO2, or tubeless inflator
  • Tire pressure too low: Increase pressure by 5-10 PSI
  • Tire/rim compatibility: Some combos are difficult; try soapy water on bead
  • Damaged bead: Inspect tire bead for cuts or deformation

Sealant Spraying Out or Not Sealing

Possible causes and solutions:

  • Puncture too large: Use a tubeless plug kit for holes larger than 3-4mm
  • Not enough sealant: Add more sealant through the valve
  • Sealant dried out: Old sealant won't seal; refresh completely
  • Sidewall cut: Sealant can't seal sidewall cuts; use a boot or replace tire

Sealant "Boogers" or Buildup Inside Tire

What's happening and what to do:

  • Normal process: Sealant dries into chunks over time
  • Remove periodically: Break tire bead and clean out dried sealant every 6-12 months
  • Add fresh sealant: After cleaning, add fresh sealant and reseat tire
  • Prevention: Regular sealant top-ups prevent excessive buildup

Valve Clogged with Sealant

Solutions:

  • Remove valve core: Clean with water or replace if damaged
  • Position valve at top: When adding air, keep valve at 12 o'clock to prevent clogging
  • Use valve core tool: Keep one in your toolkit for quick cleaning
  • Preventive: Position valve at top when storing bike

Pro Tips for Tubeless Maintenance

✓ Carry a Spare Tube

Even with tubeless, always carry a spare tube and tire levers. For large cuts that sealant can't fix, a tube gets you home.

✓ Check Pressure Before Every Ride

Tubeless tires lose air faster than tubed tires. Check and adjust pressure before each ride for optimal performance and to catch slow leaks early.

✓ Use Quality Sealant

Not all sealants are equal. Popular options include Stan's NoTubes, Orange Seal, and Muc-Off. Some seal faster, others last longer—find what works for your conditions.

✓ Get a Tubeless Plug Kit

For larger punctures (3-6mm), a plug kit can save your ride. Plugs work with the sealant to seal holes that are too big for sealant alone.

✓ Store Bike with Valves at Top

When storing your bike, position the valves at 12 o'clock. This prevents sealant from pooling around the valve and clogging it.

✓ Track Your Sealant Schedule

Write the date you added sealant on the tire sidewall with a marker, or keep a maintenance log. This helps you stay on top of refresh intervals.

You're All Set!

With your suspension dialed, cockpit positioned, brakes bedded, and tubeless maintained, you're ready to ride with confidence. Check out our other guides for more tips on bike setup and maintenance.