Many thanks for the replies guys, I had automatically assumed it was a stone but at the time it happened I remember hearing a bang and remember thinking that there were no cars anywhere near in front of me and that it didn't quite sound like a stone bouncing off the headlights but I thought nothing more of it. On closer inspection I cannot see any damage to the headlight glass that shows a point of contact where a stone may have hit.
I was wondering whether it could be a warranty issue... I enclose some pictures and would appreciate your thoughts.
Many thanks guys.
Yes I guess that It would be impossible to prove for me either way.... Just interested if anyone else has had this happen as I have never had a lens crack in 35 years of riding.
I did think the lens does not exactly look heavy duty. It doesn't affect the beam of light so no worries there but I guess in time I will upgrade to the LED once I have done some research on this site about them and how easy they are to fit.
Cheers, I appreciate all your replies.
How many miles on your bike ? Definitely some stress in the glass - and similar to an earthquake relieving stress in the Earth's crust - that shouldn't have been there -- perhaps improper cooling when it was made.
Looking at your photos more closely, I would guess rather that the machine that mates the metal rim to the glass was improperly operated or adjusted, and caused minute cracks, that finally spread.
I would encourage you to go for the warranty.
And whatever that outcome, there are a number of suitable improvements available (and much information about them on this site) as @barbagris mentioned.
Thanks Joesmoe, it does look like it has started at the rim & then spread. Im going to take it in & see what they say. Ill let you know what they say.
Cheers.
i have a few headlamp units here from the R&D stage of a headlight mod, the glass is fine you can have for free if wanted but i think it'd be more trouble trying to separate the glass from the reflector than it would be to just buy a replacement or join the fashion wagon and get those expensive LED lamps
regardless i think you should be ok under warranty