Ablowout is a sudden decompression of a pneumatic tire (tyre). Blowouts can be caused by a number of factors, but all of them have a central problem - a build up of heat (and therefore pressure) caused by deflation of the tire. The reason for the deflation of the tire could be due to the age of the tire, a slow puncture or simply not checking the tire pressures for an extended period of time. The structure of a tire can also be damaged due to kerbing.