Hmm...
http://www.lighting.philips.com/foru...es/36536.shtml
"HIRs need very specific glass capsule shapes and geometry in order to reflect wasted heat energy back onto the filament. A dual filament version is unlikely to be able to be an HIR design. If you look at the GE and Harrison-Toshiba HIR bulbs, you will see that important capsule design."
http://www.lighting.philips.com/foru...es/34290.shtml
"I had a friend send back from Japan a set of 9005 HIR bulbs made by Polarg. As someone else had posted previously, the light output is close to an overwatt bulb, maybe around 90 watts. (The ones that I have are rated at 65 watts.) I replaced a set of Philips Premiums with these, and they seemed to put out significantly more light than the Philips. I don't know what the life span is, nor do I know the color temperature. After messing around with all the blue / superwhite bulbs, I came to the same conclusion as everyone else to stick with clear bulbs."
