DNI (Documento Nacional de Identidad)

If my DNI (Documento Nacional de Identidad) was about to expire in 1 month, can it be renewed anytime or does it have to be renewed asap?
At the moment im overseas not in Spain, if my DNI was to expire in 1 month do i have to go to Spain asap or can it be renewed when i get back?

PLEASE HELP!

THANKS...

I was in a similar situation as yours, and it took me like five years to renew it. When I went to the police station, the lady was a bit reluctant to issue me a new one. I had a quarrel with her, and finally I managed to get it renewed.

To avoid problems, my recommendation is that you do it within a reasonable time-frame from the expiration date (several months). You can also renew it at a Spanish consulate.

Regards

Thank you for your help Sir.
I hope that when i get back to Spain there would be no problems what so ever.

Thanks....