The repairability of a tyre largely depends on the nature of the damage it has sustained. Generally, only punctures located in the central three-quarters of the tyre's tread area are considered repairable. This area is deemed safe because it avoids the tyre's sidewalls, which are under significant flex and cannot be safely repaired if damaged. The type of damage suitable for repair is typically limited to punctures that are no larger than 6mm in diameter. This specification ensures that the structural integrity of the tyre can be maintained after the repair. Sidewall punctures, large cuts, or damage caused by driving on a flat tyre often compromise the tyre to a degree that makes safe repair impossible, necessitating tyre replacement instead.