tubeless

Tubeless refers to tire and wheel systems designed to hold air without an inner tube. In tubeless setups, the tire bead seals against a sealed rim bed and rim tape covers the spoke holes to prevent air leakage. A tubeless valve provides the air connection, and many systems use a liquid sealant inside the tire to seal small punctures and improve air retention.

Tubeless configurations are common in automobiles, motorcycles, and bicycles. Automotive and motorcycle tubeless tires are standard, while bicycles use tubeless-ready rims and tubeless tires that rely on sealant. The bead, rim bed, and tire construction must be compatible to maintain an airtight seal.

Advantages include reduced risk of sudden flats from small punctures, potential weight savings by eliminating an inner tube, and the ability to run lower tire pressures for improved grip and comfort. In cars and motorcycles, tubeless tires also contribute to better heat management and fuel efficiency.

Maintenance and limitations: sealant needs periodic replenishment, typically every several months, to maintain effectiveness. Repairs for larger punctures may require plugging from the outside or tire replacement, and installation can be more challenging when mounting a tubeless system. Not all rims or tires are tubeless-compatible, and improper installation can lead to air leaks or bead seating failures.