So these are ok in Oz?I noticed that these LED Phillips bulbs will soon be available in the UK soon after having a quick look at Powerbulbs.
Philips X-treme Ultinon LED Car Headlight Bulb H4 (Twin) | PowerBulbs
Won't be long until you guys see them on the road, even if they are classed off road.
A dirty lens could increase heat build up. Is the silver shroud at the end of the bulb still intact - if you've scratched some of that coating off during fitment it will direct light straight forward rather than off the reflector.
I have a set of t6 headlights for sale if your interested? Have replaced mine with led units. Will take £200 including postage....