Headlamp bulb life

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Paulr
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Headlamp bulb life

Post by Paulr » Tue Nov 14, 2017 12:31 pm

About three years ago I upgraded my Santa Fe head lamp bulbs to Philips H4 high Intensity bulbs because the factory ones are a bit dull. This morning they both blew as I started out on my rainy 6.00am journey! (so I swapped to my Z4).

Can I assume if one bulb goes it overloads the other? And that the brighter lamps burn brighter but at a cost of lifespan? I kept the original bulbs and put them back in after checking fuses etc. They still work fine.

What are others experiences of these brighter bulbs?
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ph001
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Headlamp bulb life

Post by ph001 » Tue Nov 14, 2017 12:34 pm

No, one blowing won't overload the other - they both have their own 12V feeds so are not connected together.

Bulb brightness and lifetime are very much related though. This page gives you a good idea of lifetime vs performance etc...

https://www.philips.co.uk/c-m-au/car-li ... bs/halogen
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Headlamp bulb life

Post by Marlon » Tue Nov 14, 2017 12:39 pm

I use Osram Night breakers and when one goes the other is not far behind - higher intensity lights burn out faster, but its worth the trade off to me as they are a huge improvement over the standard candles.
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Paulr
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Headlamp bulb life

Post by Paulr » Tue Nov 14, 2017 1:59 pm

Wow, thanks for the link, cant believe my bulbs only had a 400 hour lifespan. That is just 4 hours a day for less than a year.
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