[cjiom]

I bought some silver star bulbs to try, but they ended up in my car :-( Must get some more next time I am in the factor and try on the bike.

One thing my factor did say was that they were not sure of the use of these in plastic headlights and that that would be at my own risk. Nearly all osram bulbs (thats how they are branded here but think they are the same) are low UV and safe with plastic lenses. The EX seems to have a class lens anyway.

I have only had one headlamp fail on me and that was after 27000 miles so I presume that (unless it was replaced) they last quite well.

High output lights should have a slightly lower life than the "long life" bulbs, but then you get more light so can see where you are going better. The super bright H4 is the same technology used in the H7 I believe and they are fitted as standard by many auto manufacturers. If there was a problem they would not fit them. Thats how I feel anyway.

There is life span data at www.osram.com

Technical - Life
B3 @ test voltage 13,2 V 150 / 150 h
Tc @ test voltage 13.2 V 350 / 220 h

Does anyone know how to interpret this?

 

[cjiom]

Maiku

http://www.sylvania.com/auto/silverstar.htm lists the H4 as available for motorcycles. Thats probably bad news if you want to pick one up cheap. I found that from a car parts shop they were £10 for two, and from a bike shop they were £9.99 for one. Thats a cheap bike parts place not a Dealer (I did not ask, it would be scary)...

They list some stockists though not being in the US I don't know what life is like.

Here in Europe the H4 is available everywhere, like in petrol (gas) stations etc. I just used the spare from my car last time my bike went.

The prices Sylvania list in their online store are quite scary! $22.49 for one bulb.