What is the reason to replace the tyer for the air craft?

1. The tire worn out
2. The red line appear on the tire
3. The flat spot appear on the tire
4. leak air on the tire

A Cut Mark On Side Wall

After Specific Landings

After Visibility of First layer On Tread Portion

air craft Tyre has got certain life. after expiry of its life it has to be changed must. its life depends on calender or operational. Calender means after expiry of certain time limits and operational depends on Landing(after expiry of certain landing limits).

to resist more friction