Question

If you fill air into your cycle tyre very tightly during hot summers there is a chance it might burst. Why?

Answer 1

There is no chance because when you put in to many air the pump will let some air out. The bigger presure there is then the more air will be let out.

Answer 2

The molecule of gases are very loosely packed and when it is filled in a hot summer ( means it is heated ) and also in  a tire at high pressure the molecule will move apart from each other and create pressure on the walls of tyre and due to its expansion the tyre will burst and cause loud sound .