The term tubeless refers to a tire system where no separate inner tube is used between the tire and the rim. Instead, the tire seals directly against the special tubeless rim. A sealant inside the tire ensures that small leaks or punctures are automatically sealed.

Advantages:

• Lower rolling resistance and therefore better performance, especially for racing bikes and mountain bikes.

• Increased puncture protection , as small holes seal themselves.

• The option to drive with lower tire pressure improves comfort and traction.

Disadvantages:

• Slightly more complex installation and maintenance (e.g., regular refilling of the sealant).

• In the case of larger damage, repairs can be more difficult than with classic tubular tires.

Conclusion:
Tubeless systems combine speed, safety, and comfort and are particularly popular with sporty riders. They are considered the modern standard for many road bikes, gravel bikes, and mountain bikes .