I recently bought a new iload m19. Twice in the space of 12 months I have replaced head light globes. Is this normal.

 

I wouldn't think so.
There could be a few reasons for this.
What kind of roads and terrain does the vehicle drive on?
Might be a good idea to have the charging system checked for possibly overcharging., should affect other lamps too.
Quality of replacement globes, if poor quality , won't last.