Tubeless Maintenance 101: Avoiding Sealant Dry-Out and Burping

Tubeless tires have revolutionized road and gravel cycling by reducing punctures, improving rolling efficiency, and enhancing ride comfort. However, like any system, they require proper maintenance to function optimally. Two of the most common issues riders face are sealant dry-out and tire burping. Understanding how to prevent these problems ensures a smooth, reliable ride.

1. Understanding Sealant Dry-Out

Sealant inside a tubeless tire is a liquid that self-seals small punctures. Over time, the liquid component evaporates, leaving a thicker residue that loses its sealing ability. Factors accelerating dry-out include:

High temperatures and low humidity

Long storage periods without riding

Older or low-quality sealant

Tip: Check sealant levels every 2–3 months for regular riders, and replace or top up as needed. For infrequent rides, inspect sealant before each outing.

2. Preventing Burping

Burping occurs when the tire bead momentarily separates from the rim, allowing air and sometimes sealant to escape. Common causes include:

Under-inflated tires

Sharp cornering or aggressive riding

Improper bead seating

Tip: Ensure tires are inflated to the manufacturer’s recommended pressure range. Always seat the bead properly during installation and inspect for even bead contact around the rim.

3. Maintaining Sealant Efficiency

Shake or Rotate the Wheel: Periodically spinning the wheel allows the sealant to coat the inside evenly, preventing dry spots.

Top Up Regularly: Adding fresh sealant helps maintain a consistent liquid layer for effective sealing.

Use Quality Sealant: High-quality sealants last longer, seal better, and resist clumping.

4. Seasonal Considerations

Hot Weather: Check sealant more frequently; high temperatures increase evaporation rates.

Cold Weather: Sealant can thicken or freeze in extremely low temperatures; choose formulas designed for your climate.

Conclusion

Tubeless tires offer significant advantages, but neglecting sealant maintenance or proper inflation can lead to frustration and unexpected flats. By regularly inspecting, topping up, and correctly inflating your tubeless setup, you can avoid dry-out and burping, ensuring a safe, efficient, and enjoyable ride every time.