Two different constructions
Tubeless describes a tyre operating without a separate inner tube. Air is retained by the intended tyre, wheel and valve system. With a tube-type construction, a suitable inner tube forms part of the intended assembly. These are technical specifications, not freely interchangeable choices for every wheel.
Many modern passenger cars use tubeless tyres. Older vehicles and special applications may have other requirements. Actual markings and documents matter more than assumptions based on age or appearance.
Wheel and valve are part of the system
A tubeless tyre does not automatically make any wheel suitable for tubeless use. Sealing surfaces and the specified valve belong to the system. When pressure is lost, looking only for a nail in the tread is therefore insufficient. Several locations can be responsible and need professional assessment.
Do not insert a tube as an improvised remedy for a damaged tyre or unsuitable wheel. Manufacturer information determines whether an assembly is intended and technically appropriate. Matching diameter alone does not answer this.
Do not shortcut damage assessment
A tyre temporarily retaining air after inflation has not thereby been proved undamaged. Repeated pressure loss or visible injury needs investigation. Tell the workshop the history, particularly driving at low pressure or earlier repairs.
Fitting and possible repair belong with a suitably equipped business. Altering the construction yourself can conceal a problem rather than resolve it. Emergency sealant is not automatically a permanent professional repair either.
Specify the order clearly
Provide the complete tyre description and existing wheel details if construction is uncertain. Ask about the intended combination rather than merely requesting another tyre of the same size.
Keep the confirmed specification, particularly for older wheels with unknown history. Tubeless is an important clue but does not establish size, capacity, seasonal suitability or vehicle approval. A clear record lets the next fitter assess the actual assembly instead of repeating an assumption made from a single word on the sidewall.
